I ordered three of the stackable bins from an office supply store—three was the minimum order—and then agonized that I went with the most expensive solution.
Then a friend was like, “And why wasn’t a covered box a good solution?” And the reasons for not giving that a try (too big for the bathroom, cats don’t seem to like anything encroaching on their litter space) suddenly seemed lame. So then I agonized about the fact that I had already bought one but gave it away.
But then, as I was leaving the house I saw that my neighbors still had it out in the hallway so I explained the situation and asked if they wouldn’t mind if I took it back (they weren’t using it) and so now I’m giving this a try. The stackable bins are still on the way, but maybe this will work.