Shock them by making the face of a their card melt off, leaving the card COMPLETELY blank!
Open your card wallet showing two cards, place the cards sandwiched together in the spectators hands face to face and claim that with a little concentration they can make one card melt right through the other. After a little by=ply they open their hands to find that the cards have not moved but the ink from the face of one card has melted right through the other! The wallet can be shown empty, and only 2 cards are used. Very easy to perform and an instant reset, ideal for strolling.
Gimmicked rugged Wallet & Special Printed Cards.