Don't forget the beer. Shake the can or bottle, pop the tab or lid, instant class A fire extinguisher. A two liter bottle of diet soda does the same thing but with a little less mess. DO NOT attempt to put out a liquid fuel (class B) or energized electrical (class C) fire the water in beer or soda will make things worse. If you need instructions see
https://www.youtube.com/watch?v=G8nKwoZY8sk.
There are also class D extinguishing agents, generally used for metals fires, and need to be specific to the specific hazard.