I'm still here, I'm just over halfway done and I think I have posted all the photos. I'm currently neck deep in other projects that must be completed first. When they settle down I'll be back to the block challenge. (That's why I did so many early I knew I would have less time now).
Oh my Barb that must be very difficult. Perhaps when you premake his meals you could put different things in different containers, for instance tupperware small rounds are soup, and rectangular glad has lazana? I know different kinds of containters "feel different" either in the type of the plastic or with the name imprinted on the top.
I don't know what your collection of plastic looks like, though I just learned that while the deli select lunch meat has glad emblazed on the top, the Butterball slices have Butterball indented on the top. Would something like that help?