Fire extinguisher

halfafish said
I like them, small, light, and easy to keep handy.

I like those aspects, too. But if they don't work, they're no help. Unfortunately, it would be expensive to test them.

pittsburghracer said
I know it’s not the answer all but I bought four of these. One for my house shop car trailer and motorhome. Cheap investment to have around.

Emergency Fire Blanket

I may get a couple of those, too. I'm guessing you can tell when/if they're expired, or just plain no good anymore. I'll have to see.

Edit: The site says as long as it is in good condition, it'll work.