The furnature and detail items always get built before the structure in most miniature DIY kits. I always wished I had a little moving van or storage container to keep my furniture and details in while I complete the structure and other items.
I would want the moving van to be very detailed. Complete with straps, hooks, cover blankets and various sized cardboard boxes to keep small items like books and tiny nicknacks.
It could be fun for super creator builders too. Instead of just removing things from plastic bags, they can organize it into their moving van. Then enjoy moving in like a real move in.
A moving van could completely change the way you play with your miniatures.