Borrow a penny from a spectator. Using a small piece of paper and pencil you make an impression of the penny on the paper. You then put a drop of water on the impression and rub it in until the image disappears. You say that when the impression disappears, so does the penny. Lift the paper slowly and show that the penny is completely gone. Your hands are completely empty, you are clean and you can give the paper away.
-You start and end clean
-Everything is examinable
-You are instantly reset to perform it again (carry enough 3”x3” papers with you for the gig)
-No body hook ups
-This fools magicians!!