I keep very basic supplies - a sort of cross between a BOB and 72+ hour kit - at various friends' places in several cities. Actually, they keep them for me. Each cache lives in a backpack and/or 5 gallon bucket, so they don't take up much space; no firearms or ammo are included. While not necessarily preparedness-oriented, my friends know what's in each cache, and in the event of an emergency they're welcome to use what they need since I probably won't be around. If I am around (or on my one or two day walk to their place), they'll probably leave most of the gear alone since, not being preparedness-minded, they're probably going to need my help.