Osmosis is a gimmick that can be used to create many amazing effects.
You can take any object up to the size of a cellphone and have it melt right through a soda can. The object can be signed if desired. It even works on factory sealed cans of soda. You are able to show the can 360 degrees around before and after the effect, as the object really IS in the can. Your hands are completely clean and empty.