You have a paperweight with a removable top and a hole at the bottom. You remove the top and put a Half Dollar coin in the paperweight and close the top. The coin is visible from the bottom of the paper weight.
You hand out the paper weight to the audience and tell them that if they are able to retrieve the coin from the paper weight, the coin is theirs to keep. Try they might, the audience is not able to retrieve the coin from the paper weight, but you can retrieve the coin in a second!!!
This is an excellent prop as an opener in any close-up show or when you are just with friends. This coin safe is made of wood and lacquered to a high finish.