This comment actually made that choice click in my head, I'd never asked why that was before and kinda assumed it was to help protect the internals of a machine you couldn't fix from the environment but really it's more likely to be so you always have some bandages on hand (however sanitary)
oh, I figured it was just the ideal binding material for broken parts (e.g. limbs, rifle butts) whilst providing comfort and stretch/tightness control.
Now I'm no apocalypse expert, but I feel like a knife taped to some rebar doesn't make for a very viable arrow, or at least not one that the pictured bow could fire
Edit: is that a curtain tassle they've used for fletching?
I'm also unsure about the purpose of the blood-stained bandages that keep you from holding the sub-machinegun's foregrip.
Or whether the sharp, jagged edges on the frame of the goggles might be an issue.
And what the fuck is the skull used for?
I can't comment on the other things, but the skull is obvious - it's for drinking, and the top half functions like a lid you can flap on and off, like a German beer stein.