There's also the Gizmo in my junk drawer that will start whirring at random too....I can't wait for the battery on that thing to die.
Ha ha, that reminded me of something my brother did - He had this stupid cup he bought at the Rainforrest Cafe in Orlando. When you pushed a button on the bottom, the thing would light up and blink colored lights. Good for a 5 year old but my brother is 31...
Anyways, he used it so much his wife got sick of washing it every day so she told him he could wash it himself. Becasue he is lazy, he put it in the dishwasher, despite the obvious (and also written on the bottom) reasons why you shouldn't put a cup with lightbulbs in the dishwasher.
Somehow, instead of just breaking, the cup got stuck permanently in the ON position, so whenever anyone went in the kitchen, there was the cup, blinking away in its full glory. He tried to hide it in the cabinet, but it would scare people when they were trying to get a cup in the dark and they opened the cabinet door and there was this cup, flashing like crazy!
Edited to add: Luckily the batteries died... Eventually. They had an unsually long life... unfortunately!