In our last TT, we too stored it in a mesh bag in the shower. However, I'm too OCD for that and it was bugging the daylights out of me. Plus, we use our shower alot.
I finally cut a hole in the wall under the bed, which opened into and outside compartment. Then I moved a cabinet door from a kitchen cabinet that didn't really need a door, and installed that over the opening. We store a laundry basket under the door in the outside compartment, so when we throw our clothes through, they land in the basket.
We liked this mod so much, I repeated it when we bought our new TT this summer.
(Which reminds me, I need to update my signature!)