I've had a couple of ideas of buying something and returning it within the hour to the store with either a fake/broken model, or just filler material. In theory, I would do this with items that are shrink wrapped, so that I could reshrink wrap them and hope that the return counter doesnt open it.
Anybody have any success with this? What sort of items have you done this with? What are the risks of doing it with a big ticket item, like iPhones and iPads?