@schmidt_fu Thanks. I'm glad that works for someone!
We discarded using different containers as requiring way too many of them and being a hassle to ensure clean containers end up back in the basement by the dryer. I think we already have four or so containers that flex between clean and dirty.
The "laundry 'room' at far end of unfinished basement" thing really breaks a lot of approaches that would be convenient here. Children and oodles of laundry break the rest. ;)