That is just like my old green lunch box. From the link: "...it was still exciting that they came across something so ancient ..." I resemble that remark.
Do parents really leave silly notes in their kids' lunchboxes all the time now? . To me, that is strange. I wanted to be independent, in school, even in 1st grade, once I learned how to catch the bus. This one would be OK, but I always had to eat the crust anyway.