Flick by Mario Tarasini

Ultra visual magic here!!!
Effect:

Show an empty bottle and a coin. Visually toss the coin in to the bottle and the coin will melt through it.
The bottle is then handed to the spectator for an inspection and to keep.

Spectator cannot find any holes or gimmicks. Also, you can do this effect with a bottle full of water or any drink.
Upon learning the secret, you will immediately want to rush out and perform it.