Just wondering. I have never even thought of this until recently. Assuming you don't already have your own urinal, if the bathroom sink is the right height/depth then can it serve as a urinal? I know it sounds unhygenic but if one runs the water for a sec I'm thinking it would rinse clean, it uses less water too, and one wouldn't have to worry about dripping onto the toilet bowl rim or floor. I think of things like this sometimes, I'm an engineer/inventor type.