The TS floorplan comes with a nice closet behind the drivers seat, configured with a hanging compartment and 2 drawers. We really did not use the hanger, so we decided to set it up with shelves instead. I used some 1/2" thick trex type trim boards left over from a deck project to cut 22"x10-1/4" shelves and installed them on runners that I screwed to the sides with 12 inch vertical spacing. I finished each shelf off with some 1/2" aluminum c-channel that I welded 1/2" aluminum tubing to. This both stiffens the shelf and provides a lip to keep things from sliding into the door while traveling. While we were at it, we decided to cut the large heavy curved door down to only cover the closet opening instead of the entire wall. This eliminated about 12 pounds, gave us wall space to hang things on and made opening the door much less obtrusive on the living space. Full write-up
here