Logan Kohn - Bent Then Broken

Imagine borrowing a coin from the audience and having having them sign it, then sparking up a conversation about super powers. You go around asking people what kind of super powers they always wanted. You explain that you always loved the idea of superhuman strength. With nothing else in your hands whatsoever, you take their signed coin and cleanly bend it right in half. They think the trick is over but you then proceed to actually rip the coin right in half! Both halves, still having their marking, are handed back and can be kept.
Some additional supplies may need to be purchased and you will have to make this gimmick in order to perform.
Special Thanks to Walt Noon who also explored this idea previously.