I want to suggest the Alvord desert as a unique place to get away from it all. About 6 miles by 12 miles of flat hard playa to camp on so never any shortage of room. BLM land, no fees. Drinking water spring. Hot springs. 9700' Steen's mountain. There is now an outhouse and garbage cans at Frog Spring, the drinking water spring. There is about 10 miles of gravel to get here but its a good road. Closest services are at Fields which is gas and a cafe (20 miles) so bring everything you'll need. Good place for those 3 wheel sailing rigs, bike riding, motorcycles, quads. Very scenic and remote.