The magician brings out his key chain, removes a single key and places it into a spectator's hand. He then removes the metal key tag from the chain and points out the hole running through it. He places the tag into the spectator's other hand and explains he's going to make "nothing" move from one location to another. The spectator taps her fists together and when she opens the hand with the key tag, the hole is now gone! Stranger still, when she opens her other hand she discovers that "nothing" really has moved-the key she's been holding the entire time now has two holes in it!
Key is never switched
Your hands are completely empty at the end
Practically works itself