Vegetable seeds (they could conceivably be worth more than bullets or gold)
Chocolate (besides, it's a health food, now!)
Soap
Water collection stuff: plastic sheeting, rope/cord, clothes pins
Spices
Honey (buy local honey if you can; if you have to buy honey from the grocery store, always check the label to make sure of what you're getting: there should only be one ingredient listed: HONEY (and that isn't always the case).

Sue