With XBOX you can immediately cause a signed card to appear in a card case. Your spectator will watch in disbelief as with empty hands you fairly pick up the box, show the box on both sides, genuinely un-tuck the flap then slowly and fairly remove the signed card from inside of it.
Key Points: No palming and extremely fair.
My Thoughts: Once I saw the trailer I knew exactly how it was done and it didn't matter. I wanted this trick anyway.