You place four coloured, velour made bags on the table: a red, a blue, a green and a yellow. In one of the bags, you have put a valuable object, while the other three bags contain a worthless little prize. On a plate, which you place next to the bags, are four numbers who represent one specific colour. Three spectators choose a number each, and thus the colour of their bag.  When they check the contents of it, they must acknowledge they didn't win the "jackpot", because even though they had a free choice, nobody chose the "valuable" bag.

A game of chance, where you have to force nothing and leave the spectators with a free choice, but where you are the winner every time. Easy to perform. Can be done for children as well as a mature audience. Amazing looks assured!