They don’t make them like they used to. I purchased a vintage Stanley lunchbox for $15 on eBay. A nearly unbreakable 1 quart metal thermos is stored on top of the lid. The lid can be turned over and used as a lunch tray.
A divided 7 quart interior provides plenty of storage space. The lunchbox is insulated to keep food cool.
I’ll clean this up and put it to many more years of use.
If you prefer, a new lunchbox can still be purchased. Here is an Amazon link…