A Tic Tac box is displayed and a 10p coin is borrowed from a spectator. The coin is placed on the performers hand as the box is shown empty.
The magician strikes the box on to the coin and the coin is seen to VISIBLY penetrate into the box. What’s more is that the box is now given to the spectator to examine and they are now unable to remove the coin without removing the lid from the box.
Can be done with different currency
Easy to do