If you haven't seen the original video of a McDonald's Happy Meal lasting six months with no perceivable decay, you should! Then watch this video a Gizmodo/Consumerist commenter made that shows a much more likely—and humorous—outcome.
I think it's high time we started seeing more of these, and if you make your own send it our way! By which I mean both amateur experiment recreation under controlled conditions, and cat surveillance. [Consumerist]