The Cocoon Tree Tent. It's A Mobile Treehouse...

A tree tent, a birdsnest for humans, a mobile treehouse, a covered hammock. Call it whatever you wish but it looks like fun.
The Cocoon Tree tent is a ten foot diameter,
aluminium framed sphere, that rigged with a bit of luck and plenty of ropes can be used by two to sleep in.
Access, depending on its height would be by an improvised wooden walkway, a ladder or netting.
If you want to hang out and do some nesting, you can find out more about them here...