I have an adult brain injured son. While giving him his shower, he has little control over his hands, and constantly drops the shower head, banging it against the shower wall. I'm afraid this action will crack and break either the shower head or the shower wall some day. I took one of these hooks and placed it midway up the tub wall on the left hand side. Now, when he's done rinsing off, he (attempts to) place the hose behind this hook, thus stopping it from banging around. It's given him hidden physical therapy in such a way that he attempts to place it there. He's getting better at it every day.
I use Command hooks through out my house and work office for many different purposes. But this, by far, seems to be the most important to me, in many ways.