Interesting question! I guess if you are already somewhat prepared with long term storage dry goods and things that don't spoil....then at the last minute I'd be going for the things that don't keep for many years or my neighbors won't let me have now. After several days of thinking on this my list looks something like this:
As many chicks and chick feed as I could find.
Rolls of chicken wire and lumber and covert my storage shed into a hen house.
A breeding pair of goats.
Car batteries (as many deep cycle as I could get ) recharge with a car alternator attached to a stationary bicycle, or use solar panels or wind mill. Many things can be run off 12 volts including some small refrigerators or many batteries connected together will provide 120 volts.
Fuel of any kind...propane tanks, gasoline, wood, charcoal, Coleman fuel, etc.
