I just signed up for the forum yesterday. I thought someone might like to see our vardo project. It is a box that sits on a utility trailer. The trailer is a 4X8 unit from Sam's Club purchased many years ago.
We are not finished yet, but cold weather intervened. The basic body is done and the bed platform is in place. We do not plan to install much beyond the bed platform inside. On the to-do list is the outside trim including a tiny porch roof, batten trim, and possibly some external boxes.
We camped in the snow in October to see how it would work. It is insulated and was toasty with just a small electric heater. So far, so good.
John