The trick so good that it changed history!
An incredible demonstration of strength! An unbelievable exhibition of magical powers! A fascinating mystery your audience will be talking about for a long time to come! This trick even stopped a revolution! (See History and Trivia below)
A beautiful piece of equipment that is so easy to operate! Display the chest to your audience. Set the chest on a table. Ask a member of the audience to join you for the Light and Heavy experiment. Let him lift the chest- he can do it easily. Mention that you have the ability to take his strength away, merely by possessing some personal item of his. Let him hand you any item from their pocket- a handkerchief, a coin, a wallet. Place the item inside the box, and close it up. Now when he tries to lift the box, he can't do it! It's like his strength is gone! Of course, you open the chest again, return the item, and he is now able to easily lift the chest one more.
You can also use this presentation: after explaining that some items appear much lighter than they actually are, ask the spectator to lift the chest. He can't do it- the chest won't budge! Now, explain that maybe it's what's inside the chest that makes it so heavy. Open the chest, and take out a single, featherweight silk scarf! Close the chest, and NOW the spectator can lift it with no problem!
This is a true piece of quality apparatus. No assistant or stooge is needed- you use real people from your audience. You can show the chest freely from all angles, so you can do this one surrounded.