Here's a great trick to demonstrate your mastery of mind over matter!
    Have a regular straight pin concealed in one hand, between the first two fingers. With the other hand, pull a coin out of your pocket and allow it to be examined by the audience, or borrow a coin from one of them!
    When you get the coin back, lay it down on top of the straight pin in your other hand. Now, raise the coin to a standing position near the ends of your fingers, and as you do raise the straight pin with it, making sure no one but you knows the pin is there.
    Keep pressure on the pin held between your two fingers, and the coin will balance there as if held by unseen forces! You can talk about mind over matter, or wiggle the fingers of your other hand over the coin as if that was where your power emanated from!
    After a few moments, slowly release pressure on the pin, and it should let the coin gently drift back down onto your fingers! Don't forget to get rid of the pin while people are examining the coin again!