Singapore Cleanliness is a huge mental relief after having to deal with the disgusting mess that various parts of San Francisco are. Keeping this city/state clean is incredibly productive. There is a reason why a story regarding hiring cleaning consultants makes the front page news, and people are fined $15,000 for throwing out cigarette butts - singaporeans take cleanliness very, very seriously.

Cleaning toilets isn't productive labor?

Not if they're already cleaned plenty often enough and it's just busy-work, which was what I understood the parent comment to be claiming.

Without basic income, that's the closest you can get.