The Elide Fire Ball is exactly the opposite of what it sounds like—it's a ball you throw into a fire, whereupon it explodes and puts the fire out. It's also really cool to watch.

Its inventors, a German start-up, hope this idiot-proof design will provide "the simplest and fastest way to extinguish fire" and will improve on current fire extinguishers, which many people don't know how to properly operate—you're supposed to spread it around the whole burning area, but many people in the heat of the moment spray it directly into the center of the fire. (Warning, although this next video is cool, there's loud and not awesome music.)