Chuck,
Well...not much to tell. I get tired of looking at bare walls and ceilings. Variation is good. Plus, when it's 25 degrees outside and 4 months until the next warm day, I like to be reminded of things tropical, places of past vacations and the promise of summer's good camping.
I added an 18x 24 in. mirror and a whiteboard/corkboard combo last week. (The mirror gives the illusion of depth and more space.).
Eventually, I'll figure out how I'm going to construct a quickly removable arching pyramid on the rear doors that disassembles in 20 seconds when we get to the campsite. (The only thing I miss about a teardrop is the 1 MPG increase I got towing it vs. not towing it down the highway. Towing a cargo trailer at 55 MPH eats about 2 MPG off the fuel efficiency.)
Prem