We had an Airstream, handed down from the folks. That was really tight for 2 adults and 2 boys. It died. We then found a 12x32 "Tiny Home" with a loft at either end. Much more room, but not enough. We also have 10x20 storage shed, half of which I cleaned out and took over as a leather shop. When I have the genny hooked up, it has lights, fans, and nobody else in it. I like my shed. We also have a small cabin we built the first year here, 8x8 inside, and just enough room for one person and their stuff. Our youngest boy is currently residing in it, he needs space away from his parents.
What is really a shock, is that we moved out of a huge 5 bedroom house with 3 bathrooms and a 2 car garage to live here.