Taser: The same could be said for the Taser, which you can expect to see a lot of in a post-apocalyptic hellscape, at least as long as they can stay juiced up.
Lures and Line: Carrying a pole is out of the question, but you can pack fishing line and lures for some ice fishing. It could save your life.
Hatchet: Another multi-use tool, this or a small hand ax will come in handy for many things.
Pee Buddy: Depending on if you want to get frostbite on your junk or not when you whip it out to pee, consider a pee buddy. Yes. A bag that you will pee into and empty later.
Rubber Boots: These are a must. And get the heavy duty insulated kind so your feet stay warm and dry. Because frostbite tends to suck.