I'm going to do my part for the environment and stop using paper cups. Instead? I will pour all my water into this awesome hot-pink "Ho" Chalice (click on the pink when you get to the page). This way, if I leave it in the communal sink, not too many people will want to use it and then leave it unwashed, which is my pet peeve. Shooting two birds with one Ho Chalice. That, my friends, is efficiency!