Creating a survival cache. alternatively can use a lock and lock container. bury it somewhere reachable. keep identification, titles, deeds, survival items and possibly cash in it. This made from PVC plumbing pipe.
This is an interesting article from Frontier freedom on making lye soap. I have seen recipe for making lye soap but this one is different because before you get to the making soap part they teach you how to make the lye from wood ash.
Survival Bread: This bread will keep indefinitely and each loaf is the daily nutrients for one adult. think of Lembas bread - something the elves would make (for you Lord of the Rings fans). "One small bite will fill the belly of a grown man.
Everything you need to make tear gas is available at any grocery store, and with these instructions, it's easy to make.