This has to be the coolest campground I have ever seen:
http://mystichotsprings.com/Camping/camping.html
They have tent spots, RV spots, cabins, teepees and even refurbished micro (hippie) buses you can rent and sleep in (the buses are permanent fixtures). Oh... the riding is absolutely fabulous (100's of miles of dirt, high country, fire roads).
I ride there every year.