Bathroom Cup Holder
Attach to the bathroom wall and let your bathroom cup hang in it. Only works if your cup is angled, narrower at the bottom, and about the right size. If not, use the SketchUp file to remix!
Note that at this size it's kind of flimsy. Maybe mine will break and I'll remix it thicker for strength. It certainly can hold up an empty cup, but not a full cup. I'm more worried about whether I might break it putting the cup away. We'll see.