Guns, Cigarettes, and Everclear should all be fairly value dense in that scenario. Gold should do well too - the value that people assign to it due to life-long

Guns, Cigarettes, and Everclear should all be fairly value dense in that scenario. Gold should do well too - the value that people assign to it due to life-long indoctrination plus its immutability as a valuable substance through history should help it do much better in those scenarios than fiat currencies whose backers have obviously disintegrated. Food, water, and fuel would obviously be valuable too, but they're harder to carry a lot of.