Effect : The Performer catches a coin from thin air and drops it into an empty Campbell's soup can. He then goes on catching coins one after another from nowhere.
Audience witnesses the coin dropping into the empty can and also hears the  sound of coin hitting the bottom of the can. After producing each coin, dropping it into the can and then dumping it out, the produced coins are seen in a clear glass.
After each coin is dumped out, nothing else comes out from inside the can. All the produced coins are in the glass! Very visual!