A PACK OF CARDS KEPT TOGETHER IN THE AIR.
Have a pack of cards bound together with a hair, on the shelf at the back of your table. After having shuffled another pack of cards, bunch them rapidly, and, in lowering your hand as if to throw them away—substitute the prepared pack. These will fly through the air like a solid body until it comes in contact with ceiling, wall, or floor, when it will fall asunder.