Oddbean new post about login | logout @e7f76f0d This is neat. I was going to reply with something silly but when I Googled what they are used for, neat. "The Fire X Fire Extinguisher Ball is a round-shaped fire extinguisher that self-activates after about three to five seconds of fire exposure. It disperses non-toxic extinguishing chemicals, and it can extinguish fires within a three-cubic meter radius."