Place a toothpick on a handkerchief. Now gently fold the hanky, feel for the toothpick, and tell your friends to listen to the "SNAP" as you break the toothpick!
SNAP! Everyone sees and hears you do it. Then you shake loose, from inside of the handkerchief, the toothpick, restored and unharmed!
Prepare for the trick by placing a toothpick in the hem of the hanky. This hidden toothpick is the one you break, leaving the original toothpick intact. By placing more than one toothpick in the hem, you can repeat the trick without having to reload.