Perhaps I misunderstood your request, but I imagined my answer could be telling about a habit of mine when I go to the coffee house (in Italy a “bar”) which is similar to “not leaving the towel on the floor”
I bring back to the desk my cappuccino cup : one is not asked/supposed to do so, but I noticed that the waiters are really happy about it and often smile to me for that small attention. That is nice to me.

  • Italy