Balloonatrick From Paul Richards

Two coins and a clear balloon are placed on the table. The magician inflates the balloon while the spectator selects a coin. The balloon is sealed off and the magician now takes a coin and visibly pushes it into the balloon! The magician now plucks the coin back through the wall of the balloon to show the coin free again. Instantly the coin is popped back inside and it can even be given to the spectator to keep!