A simple vent hose support for a spray booth or even a dryer vent ducting. I used it to keep my flexible 4" vent hose from my DIY spray booth secured when not in use. There's a small hole at the top through which a rubber band can be looped to keep the hose from flopping about. 

I just epoxied mine to the side of my spray booth and it works just fine. I have a small shop and made mine portable so this was a good solution to tripping over or crushing my vent hose.

Feel free to improve or change it to your needs.