Oh boy. I'm the kind of person who very well might push a "permanently un-invent the Internet" button if you put one in front of me, but electric toothbrushes are so ZOMGWTF better than the manual kind. Seeing one on the "can't use" pile made me twitch. I'd pay $500 for one if that's what a base model cost (it isn't, fortunately). Even if they broke after a couple years (they don't, mostly). Solidly in the list of stuff I can't believe I haven't been using my whole life, and that is so good I can't believe they're not nigh-universal, at least in places with reliable electricity.