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Hey, hey said the man! Figured out how to post pics directly from my iPhone. Every once in a while technology is good for something after all.
Anyway. These are some tins I've got from these cool little emergency fishing kits I have. They snap real tight and would seal reasonably well so long as you don't submerge them.
Not that it solves your problem I know, but the size you are looking for are out there.