When it comes to classic RVs, the ultimate probably is a combination classic pickup towing a classic RV! A lot of people have one or the other, but to make a set with them is something really great to see in a campsite!
Some people customize them their selves, though, like the micro tiny home on wheels with flowers on the windowsill! I’m not sure that would hold up to highway driving!
But in order to really do one of these sets, you can use pretty much any vintage RV trailer. It’s mostly just a matter of cleaning it up nice enough, and then adding custom paint to match that of your truck or car.