The Yankee Flipper
My husband told me about this squirrel flipping bird feeder a few weeks ago, but it slipped my mind. I just found the web site and you guys gotta watch this video.
The ring is calibrated to a squirrel's weight and is motorized. So when a squirrel is on it, a motor turns the ring and flings the squirrel off. It's hilarious. I must have one of these!