Imagine making a metal coin pass right through your spectator's hand!
Place a Chinese coin and a quarter in your spectator's hand, have them close their hand tightly and position their closed fist with the back of their hand facing up. Reach into their closed hand, take out the quarter and place it on the back of their closed hand. The Chinese coin is inside their hand, the quarter is outside, on top of the hand. Now tap the quarter with the magic wand- and the quarter visibly vanishes! It is the Chinese coin that's now outside, on top of the spectator's hand. And when your spectator opens their hand- it's the quarter that's inside!
You have to see it to believe it- and you may not believe what you see!