Where can I find this zero gravity toy?

I remember seeing it on a gameshow where the player has prizes on a conveyer belt and it gets dropped off a building if they miss a certain amount of questions. Anyways, this toy is a 1 or 2 ft tall cone that you can put small objects in, then they float around in the chamber. I assume that it's operated by magnets or air flow within the cone. If anyone can tell me what's called and where to find one it would be greatly appreciated.|||Ebay is probably your best option.