I’ve been using one of these carpet sweepers so long I forgot to think of it as a Cool Tool. You’ve probably seen them used in restaurants and hotels. They just plain work. No electric, no plugs, no noise & lightweight. So convenient to grab for a few second cleanup. Just push and they clean, even small crumbs. They go forever. Around $50. And when you flip them over to empty, you’re always amazed how much stuff they picked up.