Pete, I have a sketch pad right next to my big chair while I am relaxing and watching TV. Somehow, these goofy ideas just keep popping into my head, and when they do, I draw a preliminary design to just record it for the future. Ocasionally, I leaf back through the often-altered, one-of-a-kind scribbled sketches and it refreshes my memory. If it might work, I make even more changes and hunt up an old cereal box and start pasting together a scale model of what ever it is. I think I should make a "Memory Display Case" for the many rediculous teardrop models that never made it to the woodshop floor. I recently found the sketch and scale model of the yet-to-be-built, Slipper-Inn, which could slip right into my old Chevy S-10 Blazer during travel and slip then right out when at a campground, with some fake wheels flippng down from the bottom. Hey, the cardboard cereal box model seems to work fairly well......Hmmm.
The challenge for me, is to build it full-size, make the required changes in order to have it come out right, then finally complete it and actually go camping in it. I've never considered myself an engineer, but my brother (who was an engineer) said that trait and my life long carpentry experience seemed to work fairly well together. I just have to get out of this empty house that the sweet wife and I enjoyed for 56 years. Some old folks shrivel up and die when their mate passes on, and I don't want that to happen to me. You see, I still have a bunch of items left on my Burket List.
After camping in the 3x3, I realized that turning around in it was a problem, due to the restricted 32 inch wide bed. So, after I got it back in the shop, I cut out a section of the curved front wall (which is actually at my right side), hinged it to lift up and out, then added a flip-down section of floor to make it a full 40 inch wide section of bed at my shoulders. So goes the 'build and alter' game. I never tire of it, and it keeps me off of the couch and out of the beer bars, and away from all of those loose 80 year old gals. Naw, just kidding, I'll continue to do my camping solo (for now). Thanks for your expression of interest though.

Roly, letting the sawdust fly, now where did I put my measuring tape?? Plans, plans, I don't need no stinking plans!