Conestoga Huts
Sheep Camps
Personally, I like this better because it has wheels, they have used a lot of tricky timber where I would use foam and ply
I think this kind of think is better for a fixed site. it’s NOT stealthy
and
These are some collected resources that would come to resemble this
https://mytinyhouseonwheels.wordpress.com/blog/
It’s the kind of thing that could park anywhere and the council might leave you alone
It would have a pop top and panels that hinge out