Betcha Light Box
This is a classic bet that gets funnier as the bet continues!
You explain that one of the three buttons will light the bulb in front of it...to make things interesting, you'll make a bet. Laying money down, you show three cards numbered 1, 2, 3. No matter which numbers the participant chooses, you are always left with the winning number! You always give them a free choice of two numbers, but the third always lights up for you, guaranteeing that you keep your money!
These are no longer in production...once this one is gone, it's gone for good!
Includes written instructions. Box measures 3" x 4" x 2". Requires one 9-volt battery, not included.