I stayed at Quartzite for a few days with friends, this is all boon docking on BLM land, free but no amenities. It was cloudy, cold, windy and often rained, not exactly what you picture the desert to be. This particular week at Quartzite is a huge RV show, with literally hundreds of vendors all around town selling everything imaginable. On the BLM land you will see every type, make, age of rv, trailer or camping rig.
From Quartzite I headed down to Organ Pipe Cactus National Monument. This is right on the border with Mexico. The saguaro, organ pipe and other cactus abound and the Ajo mountains make a nice background for some images. The campground here is very nice, with good sized paved sites, plenty of bathrooms and spigots for water. No hookups, of course, but with the solar I can do quite nicely.