It's a great deal of trouble to get your kids to pick up their LEGO blocks that end up all over the floor. It would be easier to just do it yourself, but the one who left them in the floor should do it. However, if your kid is a talented engineer like YouTuber The Brick Wall, he or she will invent a machine to do it. The Lego Rumba is a machine that picks up LEGO pieces, itself made of LEGO pieces. My guess is that "Rumba" is pronounced like the vacuum instead of the dance. Watch it in action.
To be honest, this is an automated broom and dustpan. But for kids who need to pick up their toys, it's a lot more fun. -via Geeks Are Sexy