When I brought my lunch to work it is normally just thrown into a plastic bag lol. Unfortunately I'm terrible about actually eating the lunch I bring. My old job was positioned strategically next to some outstanding restaurants lol.
As a smaller baby, 2nd grade, I had a Gentle Ben lunch box. Some 3rd grader broke it for me. What a swell fellow. You can google Gentle Ben but it was a TV series about a boy and his grizzly bear. Ben the bear was cast in a nightmare nature-gone-wrong movie "Night of the Grizzly" and he starred in the Grizzly Adams show with a costar Dan Haggerty. Ben died about 10 years ago. Had a longer career than any of his co-stars.
The lunchbox, if it was still intact and in reasonably good shape would be worth more than $500. I think my mom paid a whole dollar for it.