My favorite coffee house in Washington was “The Shelter Half”, where you only paid for food and coffee if you wanted to, and even then, you paid what you wanted.
I never paid, also I think that it was either self serve, or often self serve since I usually had to make my own food when I was there.
we probably will be needing a few more like the Shelter Half shortly, the way things are going.
Didn't that place go under? Too many of its customers decided that zero was the appropriate remuneration.