Here are three meditations from my Book of Shadows.  I'm afraid I no longer know where they came from (or even if I created them myself!).  If you have information regarding the author(s) please let me know so I can give credit.

Concentrative
Re-charging
Cleansing

Enjoy!
Ma'at
copyright 2000

Concentrative Meditation

            There is a special type of concentrative meditation which we
    will call 'Chakra meditation'. This is basically Kundalini yoga -- the
    practice of causing psychic energy (kundalini) to flow up sushumna,
    energizing the various chakras along the way. The practice, considered
    dangerous by some, will produce definite physiological sensations and
    psychological effects if continued long enough. It should not
    be attempted by epileptics or persons with an unstable mental
    or physical condition, or with heart disease. Certain drugs and
    medications, such as those used to treat epilepsy may retard
    progress. Although the technique is very simple, it may
    eventually produce powerful results. Results may at first appear
    hours after the practice during sleep. As each chakra is
    energized by this practice, it is said to add occult powers
    (sidhis), until at last the crown chakra is reached, and with
    it, full enlightenment is attained. Sometimes kundalini awakens
    all by itself.

            To practice this chakra meditation, you simply concentrate on
    the chakras, beginning with the root chakra, and moving progressively
    up, as you visualize psychic energy from the root chakra traveling up
    shushumna and vivifying each higher chakra. As we mentioned the chakras
    have certain properties associated with them, so that this type of
    visualization may 'raise consciousness', promote astral projection, and
    other things -- once you have reached ajna and eventually the crown
    chakra. You might typically meditate in this fashion for 15 minutes to
    a half hour a day. It might help to practice some hatha yoga or other
    physical exercise in an effort to make the spinal cord 'more flexible'.
    Diet may also affect the process. The technique is also similar to the
    Tibetan 'Tummo' meditation. The rise of kundalini is sometimes
    experienced as a 'vibration' or buzzing, as light, or as heat.
 

Recharging

I use this type of meditation whenever I need to "recharge" and when  beginning astral projection practice and sometimes when  beginning psychic readings.  More commonly I used a grounding meditation when performing readings.  Both are effective and  powerful.

 Lie or sit in a relaxed and comfortable position, as you would for any  meditation.  Your spine should be straight and your head  in alignment with your body.  This meditation is in script mode, should  one want to tape it and listen to it while performing the  meditation.  It is preferable to learn about energy and the methods of  balancing, cleansing and charging the chakras and allow  one's own inner voice to lead the meditation. The following is just one  way of performing this balancing.  Allow your meditations  to evolve and to reflect your individual values and beliefs.   If taped,  a slow, deliberate pace should be used with a mild voice  and the appropriate pauses.  The body should already be relaxed and the mind tranquil when beginning this meditation.  Eyes  are closed.

 "Now that you are relaxed and feeling very much at peace, take a moment  to ground yourself here in this moment, in this body,  in this place, in this time......Take some deep breaths....In.... and  out....In....and out....Follow the breath as it flows toward your  nostrils, as it enters your nose, as it fills your lungs and then as it  is expelled.  That's it, just relax into this quiet moment.  Breathe  in...follow your breath... and out.  In....and out.

 Feel where your body meets the (chair/bed/floor).  Become aware of your  body from head to toe, of your weight, of the heaviness of your limbs.  Now focus on the area at the base of the  spine, the area between your legs.  This is the root chakra.   It's energy is red, and it governs your physical body, your physical health and vitality.  In your mind, study the appearance of  this chakra...note it's color and vitality.  Mentally envision the  chakra and note any symbolic symptoms of dis/ease.   Have you  been caring well for your body?  If your chakra is dusty, dirty, torn, or otherwise less than a perfectly brilliant red whirling vortex, imagine your hands (or those of a guide) working on the chakra.  If it is dirty, clean away the dirt and throw it into an  imaginary pail with a lid.  Allow those hands to repair any  imperfections, and when the chakra is clean, mentally take the pail  and hurl it into the sun.  Watch it as it travels through space and then  bursts into a zillion bits of energy upon solar contact.

Allow the sun to recycle this energy back into the universe.

 Now turn your attention back to the root chakra.  It is a clean and
 red.  You are surrounded by infinite root energy.  Imagine
 the room glowing red with this energy, feel it's strength and power.
 See red swirls of energy flowing to your root chakra.  You
 can feel this as a tingling as the energy fills your root chakra.  As
 the energy swirls in your chakra grows large and deep red and
 strong.  Allow the energy to fill your chakra until it is so vital that
 it extends several feet out from your body.  In your mind you
 can see your root chakra,  a brilliant red swirling vortex of physical
 energy.

 Now turn your focus up to your abdomen, to the area of the "womb." (Or
 where the womb would be if you're a man).  This is
 the orange chakra, that which controls clear thinking and creativity.
 Take a moment to observe the chakra.  Note it's color, it's
 vitality.  Is it clean and strong?  Or is there work to be done here?
 Allow those invisible hands to cleanse the chakra, to repair
 or heal it.  Discard any imperfections in the pail, and send the pail to
 the sun to recycle the energy.  Now focus on the orange
 chakra again.  It is now clean and whole, and a bright orange.  Call out
 to the universe for orange creative energy and feel the
 space around you begin to glow orange.  With a tingle you feel the
 energy begin to swirl into your chakra, charging it with
 vitality, with creativity, with clear thought.  Watch as your orange
 chakra grows and whirls, until it extends out from your body
 for several feet, just as the red root chakra is still whirling and
 strong.

 Now, turn from the red chakra, up through the orange chakra, to the
 solar plexus.  This is the heart of the yellow chakra, that
 which governs will and ambition.  Take a few moments to examine this
 chakra.  Note it's color and appearance.  Have you
 been lazy of late, or perhaps too driven?  Examine your will through
 this chakra.  Allow the invisible hands to cleanse the chakra
 and heal it, discarding any imperfections or impurities in the pail.
 Send the pail to the sun for recycling.

 Now return your attention to the yellow chakra, that of will.  It is now
 clean and a bright yellow.  'Universe, send me yellow
 energy, will energy, energy to achieve my goals, to work for that which
 I value and desire.'  Feel the yellow energy surrounding
 your body, and with a tingle feel the energy swirl into your solar
 plexus.  In your mind you can see your red/root chakra
 glowing, whirling, your orange/womb chakra pulsing brilliantly, and your
 yellow/solar plexus chakra glowing strongly, extending
 several feet out from your body.

 Now turn your attention to the middle of your chest, to the heart
 chakra, the green chakra.  You may feel an instant wave of
 emotion.  This chakra governs your feelings, your emotional connections
 to others and to the universe, to life itself.  Examine this
 chakra.  Note it's color, vitality, any impurities.  Gently allow those
 invisible hands to cleanse and purify the chakra.  Reflect a
 moment on how you've been feeling emotionally lately.  Are there
 bindings holding in pain?  Or is the chakra tight and hard with
 anger?  Release any tensions, imperfections or impurities to the pail.
 Send them to the sun for recycling.  They are still yours if
 you choose to hold them, but for now, release any pain or anger.

 Now focus back on the heart chakra.  It is clean and a beautiful green
 color.  It whirls strongly and evenly.  'Universe, send me
 green energy for my heart!  Open my heart to the world, to all beings
 big and small, with compassion for our shared experiences
 and journey.  Fill my heart with love energy, that I may in turn give
 love to others.'  Feel the green energy whirling into your
 heart.  Watch the chakra grow and glow and spin with this new energy.
 From the red chakra through the orange chakra
 through the yellow chakra through the green chakra, your chakras are
 cleansed and charged and huge with energy.

 Now focus on the throat, center of the blue chakra which governs
 communication and personal magnetism.  Examine the
 chakra, noting the color and any imperfections...  Perhaps you haven't
 been honoring your own beliefs and speaking out when
 you should.   Or perhaps you've been talking over others, or not
 listening well.  Perhaps you've been feeling shy and afraid to
 extend your energy in communication.  Allow the hands to heal and
 cleanse the chakra and when finished, send the impurities to
 the sun for recycling.   Now the chakra is clean and strong and bright
 blue.  Feel the air fill with blue universal energy.  Feel the
 throat open as this energy swirls into the throat chakra.  This energy
 charges your aura with magnetism, drawing others to you.
  Feel  your throat open with this swirling, strong blue energy.

 Now focus on the middle of your forehead, the third eye.  This chakra is
 indigo and governs psychic vision and intuition.
  Examine the chakra for imperfections.  Perhaps it is locked up due to
 fear.  Perhaps it no longer spins out of neglect/stagnation.
  Allow the hands to cleanse the chakra, to heal any imperfections and
 recycle them in the sun.  Now look at the chakra.  It is a
 beautiful deep indigo, clean and whirling.  There is psychic energy
 available to you beyond measure.  Feel it charge the air, swirl
 in and around and fill your third eye chakra with deep, vital indigo
 energy.  Feel the third eye open, and note any mental visions
 as this occurs.  Now is a good time to pray for increased psychic
 power.  Note the red/root chakra, the orange/womb chakra,
 bright, strong, big!  Move your attention up to the yellow/solar plexus
 chakra, to the green/heart chakra, open and brilliant, to
 the blue/throat chakra and the indigo/third eye chakra.  Your chakras
 are huge, whirling, and fully charged.

 Now focus your attention at the crown of your head.  This chakra is
 violet near the body, fading to white further away.  This
 chakra governs your connection to the universe/God/Goddess/The Creator,
 etc...  This chakra is like an umbilical cord to
 "home."  Reflect on your spirituality of late, examine the chakra and
 allow any healing needed.  In my experience this chakra
 generally needs much less work than the others.  Allow the hands to
 heal, to cleanse, and recycle the discarded energy in the
 sun.  Now examine the chakra.  It is brilliantly violet, glowing white
 around the outside.  Mentally reach out to that which you
 consider your "source..." to "God" or the Universe.  Feel the response,
 the energy flowing back to you.  Pray for the peace and
 joy of a strong crown chakra connection.  Feel the violet energy flowing
 in, a loving embrace of your whole self, of your soul.
  See the crown chakra grow enormous, and the white energy surround your
 body.

 All your chakras are now clean, charged and in balance.  From the
 red/root chakra, to the orange/womb chakra, to the
 yellow/solar plexus chakra, to the green/heart chakra, to the
 blue/throat chakra, to the deep purple/third eye to the violet/crown,
 your chakras are spinning and whirling, full of energy and vitality.
 See the white energy that extends up and out from the crown
 chakra enveloping your whole body in a egg of white energy.  You are
 completely refreshed, calm, and peaceful.  Your energy
 is balanced.  You are full of vitality.
 

Cleansing Mediation

Sit in a chair. It is important to have both feet on the ground.
  You may choose to be barefoot. Let your arms rest comfortably by you
 resides. Take several
  deep breaths. While letting your breathing becomes deeper and even, picture
 yourself standing with
  your feet apart hands by your sides with your fingers naturally open. Keep
 this picture in your mind
  as you continue.

  Inhale … Exhale …

  Allow your breathing to relax your body and clear your mind.

  Picture a circle of energy near the base of your spine. This energy is
 strong. It connects you to the
  earth. This energy generates instinctive feelings of survival. It urges you
 to love and care for
  yourself.

  Move up to the next circle of energy in your pelvic area – this is the
 center of your emotions. Your
  acceptance of pleasure springs from this energy source. Accepting the joy
 and contentment derived
  from physical pleasure will contribute to overall balance in life.

  The energy of the third Chakra is near the naval area. Your creativity will
 flow from here. The
  essence of your spirituality begins with this positive energy source. Your
 heart Chakra energy is
  about love. It is the source of active love that is in everything you do.
 Your ability to love comes
  from here and includes your capacity for empathy, sympathy, forgiveness and
 allows the
  abundance of all life to be available to you. The positive essence is an
 overwhelming sense of
  fullness felt as love.

  The throat Chakra involves the energy of your own inner voice – guiding you
 to be open and
  honest with yourself an others. This is your voice of wisdom. When listened
 to this will lead you to
  take actions that will keep you balanced and true to yourself.

  The next energy level near your forehead will guide you to awareness of
 your soul. Imagination is
  the magic of this Chakra. Let yourself free your mind and as you accept the
 power and the awe of
  your own soul, so will you realize the soul within everyone and everything.

  Finally to the top of your head, the energy flows out and above you. It is
 directly connected to your
  spiritual self and all spirituality in the world. With this Chakra, flashes
 of enlightenment will occur --
  moments of true understanding of the world and all it contains. All events
 and emotions are clear
  and during those moments, everything makes sense. This highest energy
 source is the essence of all
  life and existence. It is true magic and it is yours.

  Envision your whole being fully energized through your having focused on
 the Chakra points. The
  body connection to each energy source will guide you to heed its request
 for attention through
  physical sensations – a headache, a stiff back, butterflies in your
 stomach.

  Think … what is going on in your life that may be blocking the positive
 energy flow – are you so
  busy with tasks that you must do that you have no time to be playful and
 enjoy the day? Are you
  so involved with the technical side of daily activities that you have no
 time for fantasy? Are you so
  busy taking care of everyone else’s needs that you ignore your own needs
 and desires? Trust that
  these sensations mean something. Think about it … Permit yourself to
 realize that as you notice
  these connections, you will naturally save yourself, your soul your spirit.
 You will be more vital in all that you do.