So I ordered one of these fire extinguishers for my truck. It's a tiny powerhouse that leaves no residue. It's non-toxic and so small and light, you can keep it in the glovebox. In the video on the site (and others on YouTube), it reminds me of a magic wand that puts out fires.
If the thought of blastng powder from a traditional fire extinguish all over your engine (or even worse, under your dash) gives you the heebie jeebies....check it out.
https://elementfire.com/ maybe I'll get some for the home too.
Dislaimer: I have no relationship with this company. A friend of mine saw it in a SEMA video and I just thought you guys might like it.