I while back on the forum someone mentioned being able to get Japanese picnic or sushi boxes. I've been searching for them for some time. I have an old one which is beat up pretty good-- it used to be sold by the Early Winters store, (no longer around here) in Seattle. Mine is made of aluminum and has a look of the tobacco tins, but the lid has a rubber seal and there's clamp at each end to keep the lid on tight. I'm willing to have one of my asian contacts decipher the stamped Japanese? writing on the side.