I have most of the lights mentioned above, and I still think the UF-980L is the best all round option. I have some nice EDC lights but still cannot bear to leave my 980L at home, so it rides in my jacket pocket. That’s never further away then the back seat of my car at least.
It is small enough to fit a front jeans pocket with my wallet and some other stuff and gives most compact throwers a run for their money. Good useable spill too. 3 modes High-Mid-Low only, with last mode used memory. It fits long Panasonic protected cells or standard unprotected ones.
It is still my favourite light and the one I would keep if there could only be one. The Highlander of torches.
Hmmmm, maybe I shouldn’t be giving such good information to my uniformed brother, in case it is used against me.
Have you thought about a box of matches? Small, lightweight easy to carry …