Once you get to the can sized survival kit, why not go all out? Mine is a polycarbonate nalgene bottle nested in a Snow Peak Mini Solo Cookset. I sorta like THIS -- using a Snow Peak 700 with a coffee can to use as a stove. Mine fits in a small nylon sack to keep it all together. A nalgene bottle can carry lots of in lieu of water and there are no problems with the can edge cutting things inside. YMMV