Remember when you would drop your thermos and hear that sickening sound of breaking glass....knowing you were going to be in trouble when you got home?
(I had the same lunchbox).
I have elementary aged kids - they still go to school with a lunchbox and thermos (too cheap to buy milk at school).
LOL! Yes, although I never broke Barbie, I dropped many a thermos. I would carefully unscrew the cap thinking "well, maybe it didn't really break"..as if.
Not me. We were too poor/cheap to buy multiple thermoses per year. So we used good old, insulating styrofoam cooled with ice ice made from good old Freon in the refrigerator (that saved lots of trees, as Freon is more efficient than the crud they use now).