Agreed about the consumables. Things with extended shelf life like tuna, ground coffee, and socks will be popular at first, but as deterioration continues I think ammo, medicine, bottled water, and alcohol become de facto currency. Gold/silver/cash will always have its place, but like most people, you probably won't have much on hand.To me, consumable items, ammo, food, clothes, will become the first phase rebuilding currencies and then after (a long time after) some formal currencies will be instituted. What good is gold or silver if there is not a recognized value. To me it would be worthless but to somebody else it could be priceless. That is the whole point of barter and the the main reason for a official currency. Barter is all about "What is it worth to YOU" and currency is about an excepted value to all. If I am hungry, that egg is going to be worth a lot more to me, than that 22 Lr cartridge.