Dancing Flame
Meditate for half an hour.
Light a candle in a safe place. A white candle on a white/light colored table is best.
Get comfortable and breathe deeply.
Stare at the candle's flame. Do not think about anything, clear the mind but keep the flame in front of you. Soon you should see only the flame. Not the table, not the candle, not the room and objects surrounding you, just the flame.
Now imagine the flame is stretching upward, growing taller, brighter. You can put your hand above it and imagine you are drawing the flame upward. Imagine the flame shrinks, becomes smaller and shorter. Imagine it flickers and dances. Imagine it bends. Practice these things until you feel you are "one" with the flame, and it is doing as you desire it to.
Keep practicing this, once you are comfortable with your ability to do this, try putting the candle out with your mind. Could you light it up again with just your mind? Hmm... anything is possible!