The Hanging Tent Company has produced a suspended tent meant for those that might not want to camp, but will certainly glamp (glamourous camping). Called the roomoon, it’s a sphere-shaped, portable tent that hangs among the trees.
When I was a kid we had a Tree House in the back yard. It was about 8 feet up in a big oak tree. It was a simple creation four walls, a wooden plank floor and a roof covered with leftover shingles. It was nothing fancy, but held a lot of memories in.