Hey, that movie was on last night! I happened to walk by the TV, saw it, and immediately went into a fugue state.
In a fashion, Teerminator may be the penultimate survivalist movie of all time.
Any way, my answer: .223 loose, in green ammo boxes: Every household should have at least one full ammo box for every AR in the house.
also, .40 cal for the girls and for CQC. I was at the gun show last week and saw shot shells for my .40 Walther, ostensibly for snakes ans such, however I envision it for "hallway scenarios" wherein I do not want to kill my neighbor with a pass-through round. I do not know about pellet sizes, but the box said every cartridge has approx 100 pellets, which must mean they are grain-of-sand sized.