This is an activity that uses friction and inertia in unexpected ways. But, you might make some quick cash.
This setup looks a lot like a one-container version of the tablecloth trick and you might be able to present it that way, too. Of course, it’s important that you leave out that fact that it’s basically just the opposite of the well known “yank the cloth out from under the table setting” stunt. Borrow some paper currency from a friend, grab an empty soda bottle, and find an open table. The game is afoot!