Fire Extinguisher Balls
An Anonymous Coward writes "The Far Eastern Economic Review has this article about a Thai inventor who has come up with throwable fire extinguisher balls. You just toss them into the fire, or place them in high risk areas, and - boom - they explode from the heat and spew various fire-retardants all over the place. According to the article, they will soon be on sale in Thailand's 7-Eleven stores and are being considered by US-based fire and safety supply company Tyco."
They were called "Fire Extinguisher Bombs". They've been selling them in Eastern Europe since back during the Cold War. They're made of glass, and hung on the wall, and when there's a fire, someone throws it into the fire. Not quite as effective as a pressurized extinguisher for kitchen fires, but a pretty good idea, anyway.