Were you around in 1967? I found a camper that was. It's an Airstream that sits next to Missouri's 12 Mile Creek near Fredericktown and you really can stay in it.
I haven't spoken to him directly, but I'm pretty sure Austin Powers would be quite proud of this far out Missouri tiny house. It's one you can stay in and boy does it give off a 60's "yeah, baby!" vibe.