Two shiny brass cylinders are placed on a table.  The Magi asks a spectator to place one in each of his/her trouser/jacket pocket.  While the Magi is the out of the room or with their back turned to the spectator, the spectator is to hide a match in one of the cylinders and return it to their pocket.  There is no way for the Magi to Hear, See, or Feel what the spectator is doing.  Yet the Magi can instantly identify which pocket has the cylinder with the match.  

This is a great, easy to perform, collectable magic trick which will wow your audience.