Clatter Shatter Box
Hand a spectator this box, explaining that it must be handled carefully, as it is a very valuable piece of equipment. Remove a silk from the box, and close it. While your spectator is holding the box, vanish the silk. Ask the spectator to open the box to find the vanished silk. He does, but there is a problem. As soon as the spectator opens the box, it completely falls apart, crashing to the floor with an awful racket!
A classic, great comedy routine! Quality wood construction, made in the USA.