Searching for plans to make your own small tiny house / camper on a cargo trailer?
This design, based on the 4 foot by 8 foot Ironton trailer available from Northern Tool, features a solar panel system on the roof and a fully-insulated 1/2 inch plywood skin.
56 square foot micro cabin tiny camper.
Source: YouTube / solarcabin
Plans are for sale through his website, Simple Solar Homesteading.