I think it was Rryder that kept this thread hoping before. He is one of my most-missed former posters... anyway, best wishes that he is organized and happy and that some day he returns
For me, sometimes it is the small things that make a big difference. My plastic tubs are translucent but still offer some light protection and I can't always tell what is inside without opening it up.
An easy search or two, and I found large repositionable labels (so they don't stick on forever!) designed to mark large totes. As I'm organizing the unsorted totes, I am putting things into their group, however I may see that... Maybe some day I will be sooo organized that I will print nice labels on my printer. Maybe.