We always take our showers right before bed and like to hang our shower towels inside. We bought large, quick dry towels and used to hang them strung through the back cabinet handles - it worked, but was a pain. Hubby hung this before our trip to the UP and we love it. Pole is a piece of PVC and the little "cups" are about $2.49 each. Pole comes off and easily stores behind the dinette cushions - or just leave it - very unobtrusive.
I carry a couple of tension rods. They can go anywhere across my 17, and I can even hang a curtain if I have company and I want some privacy. They store in the cubby across the front of the trailer.
__________________
--Time and trouble will tame an advanced young woman, but an advanced older woman is uncontrollable by any earthly force. --Dorothy Sayers