There are lots of cool ideas all over this site. You might check out the photo gallery, and I've made a few suggestions and posts that some folks thought were great ideas. One such suggestion was to scavenge bunks, dinettes, and storage cabinets from big rigs. Some Volvos have a nice setup where the lower bunk doubles at the dinette that the table collapses to turn the seats into a bunk. Real space saver if you can make it work. Most semi tractors also have a curvature to the roof as it slips back, and the cabinets follow that, which is about as similar as you're going to find to fit the ceiling of a skoolie.
"Cheese Wagon" <firstname.lastname@example.org>
Former owner - 1989 Ford B700 64-pass Blue Bird (Rest In Peace, Cheese Wagon)