Put your audience in a mild trance and they'll actually see what you describe!
At last, a handling of the classic Ball & Tube trick that will leave spectators
gasping. In this routine, you'll be able to: change a steel ball bearing into
a crystal ball without any switches, make the ball shrink without falling through
the tube (and without using the gimmick!) and the effect will even happen under
close observation and in the spectator's own hands!
A truly magical effect, and that's not even the best part-after you have demonstrated
the antics of the ball & tube, your audience will be in a mild form of trance,
making them ready accept to such suggestions as: "you will be able to FEEL
the coin leave your hand," "you will actually SEE the card change
before your eyes," etc. and the amazing thing is that they will experience
what you're simply suggesting!
