THE DISAPPEARING CUP
Before the performance you secretly place an elastic band around the top of the cup. Put a handkerchief on the tips of your right-hand fingers and put the cup, upside down on top of it. Strip the elastic band off the cup, so that it is now on your fingers. Put the left-hand palm on the bottom of the cup and turn everything over. The cup falls in the left hand while the handkerchief (by means of the elastic band) covers the fingers of your right hand, which are inside the cup. The cup can now be held comfortably in your half closed left fist as it comes out from under the hanky. The rubber band will make it look as though you are holding the cup with your right hand. Go into a box or hat on your magic table and bring out your wand, having dumped the cup. Tap your right hand and pull away the hanky. The cup has disappeared.