Not just another magic trick. This one is magic GENIUS!
A pocket sized version of the famous Bowling-Ball-from-Attache-Case trick!
The idea is simple- you produce an item from this flat case, an item that is OBVIOUSLY much larger than the case! How is that possible??
Your spectators will be truly startled when you show this small case, open it, and take out a golf ball. Or a flower. Or coin after coin after coin, until you have removed a pile of coins much too large to have fit inside the case.
This is a real mystery puzzler with great comedy potential!