I carry most of the items except the winter things. I live in Florida. Also have two cans of tire inflator plus plugs. Also a 9mm Helwan, (a perfectly good effective gun but would not kill me if it were stolen).
I had not thought of the food items but probably not that useful here. Also keep a small tool box with basic wrenches, 3/8 socket set, Leatherman and Swill Army knife.
I have an army surplus shovel, a really good one too. I might stick it in the trunk now that I think about it. It is folded and in it’s own carrier.
Also a couple of empty water bottles. Could carry gas in them if I had to. Also about half a jug of coolant. Two flashlights both LED.
Surprisingly, all of this does not take up much space.
“Swill Army” — recollections of your grunt days? Better than “Slop Army” I suppose.