Y'know, there's been a lot of talk about weapons, but have people discussed basic survival gear? I mean, certain things are obvious (eg. water containers) but other things are a little less obvious.
I was imagining coming across a store or something that I want to scrounge in, and I would definitely want to spend a while observing it from a distance, and for that I'd need binoculars.
-Rope. Carabiners would be handy as well, I think, even for just securing things regardless of whether you know harness knots or how to climb rocks.
-A can/tin opener for tinned food. It would probably be a good idea to have some sort of vessel like a single small pot to cook in, as well, because of the need to heat things to kill pathogens before you eat them, although if you boil everything you can just go find some skunk cabbage leaves and boil stuff in the leaves (it's true, it works!). Having a pot means you could also eat out of it, especially if you needed to make a soup if you got sick.
-Some sort of first-aid kit in a waterproof pack, with an
ace bandage and some clean gauze and prepackaged alcohol wipes and bandaids/plasters. Hydrogen Peroxide would be ideal, especially if you are living outside most of the time, because a lot of the cuts and scrapes will get dirt and shit in them and the bubbles are more effective at cleaning them than alcohol. Also I guess you could do away with the medicinal alcohol if you couldn't get any or used it up if you had access to some high-content vodka or bourbon or something.
-A waterproof tarp. You cover your supplies with it during the day when you are carrying them around, and you cover your shelter with it at night or whenever you have to sleep.
-Dental floss. Having some sort of synthetic fiber, especially one as thin as this, is a good idea for repairs on fabrics and things like your tarpaulin.
-A stainless steel needle, size is irrelevant although larger would make it harder to lose. You will need this until you can figure out how to make them out of bone like the Native Americans did, or suddenly acquire metalworking skills in the middle of nowhere and can thus produce your own.
-Hatchet. You need firewood, end of story. You can also substitute a standard axe or machete, if you have one.
-Flint and steel, or some other water-resistant method of producing fire.
-A small bladed knife. Trying to do things like split twigs or twist-poke holes in blocks of wood with the corner of an axe blade or a machete is murder and you are more likely to injure yourself than succeed. Also good for standard cutting, peeling a few vegetables, cutting food, cleaning fingernails, building traps for small animals, and making small and narrow cuts in skin for things like snakebites or nasty infections.
I can't think of anything else off the top of my head right now, because obviously water containers and a pack to carry this stuff in have been mentioned and you would already have them.