Late to the show here, but one thing I have not been able to figure out is why someone here does not do a "group buy" from the milsurp auctions down at Bragg or Cherry point. You can wind up getting cans for about 3 dollars a piece or better. Have to get a thousand or two of them at a time, but I go thru those things like goober peas. I will bet I have 80 of them scattered in three states and two countries.
I keep in them: ammo (color coded for 9 mm 40 223 7.62x33 7.62x25 7.62x54R 5.45 22 30.06 etc // silver (they bury real good with dessicant inside and double wrapped in a plastic trash bag. // handgun and ammo cache (again, buried) // nickels (I put away about 100 dollars of nickels a month. a small ammo can holds 196 dollars worth of rolled nickels) // put a wire mesh inside one and buffer with cloth and you have an EXCELLENT small Faraday cage if you are emp paranoid // all sorts of small survival gear, from matches and compasses to space blankets to sporks to small mess kits to sewing kits to fish antibiotics to magnifying glasses to maps to batteries. You name it, if it is small I probably have it in an ammo can. // Spare parts for your various weapons, along with basic took kits to work on them// Electronic tune up stuff (plugs, working computer chip, fuses, different gauge copper wire, light bulbs) for the truck.
These things are versatile, moveable, watertight -- well, I haven't tried SUBMERGING one, but I have heard guys say an ammo bunker took water and one sat underwater for 2 months and the rounds were perfect.... just what I heard. I don't understand anyone who is prepping who doesn't have their shop/storage area crawling with them.