I'm so stupid. Went to Mitsuwa on Sunday and saw they had the Leaflet Tight box I bought (the small green one) in a slightly larger size, for only a dollar more, and I didn't buy it. The green one is a good shape and pretty cheap - like $13.99 for the 650 ml one, and the one I bought 500 ml is $12.99. Arghhh... could have used it... ah well. What would I do with my green one, then? I guess pack snack-bentos??? I don't know... doh-well.