I have a high quality, plastic drinking cup that I got from DHL years ago. I use it in my bathroom at home. I like it because it won't break if dropped on the tile floor, it stands up to the dishwasher and is sturdy enough to stand up to 20 years (that's right) of constant use.

I dislike the flimsy plastic disposable cups that one usually finds in a hotel bathroom, and believe that glass cups in the bathroom are a safety hazard.