I've owned my 21RBS for about 2.5 years now and these are some of the mods I've done, these were originally posted on the "LivinLite" forum so some of you members might have seen them.
Bulldog hitch,,
2.5 lift for Dexter axle
There aren't any drawers in the camper, so I picked up this commercial silverware holder
I like the silverware holder!