Here is an extremely well-documented build with plans of a beautiful vardo.
“This is my home-built trailer using classic and modern building techniques and style. Based on traveler’s and “gypsy” wagons from Britain and France as well as sheep wagons from the western U.S., I am keeping this to the absolute minimum in size and weight. I don’t plan to live in it full-time so it can be thought of a base camp. I have mulled it over for a very long time and was torn between this style and a teardrop design. Each have advantages but this just seems to suit me better…”
The build can be seen on Paleotool’s blog.