I’ve seen that before, and it looks really cool. I especially like it if there are lights underneath.
And I love the idea of the helium balloons, Mr. Bus Guy! The cats would be terrified. 
I like large rooms partitioned into small areas. I like cozy little places, yes, but I have to be able to stretch my leg out.
However, socks and any kind of pants that extend over the feet make me extremely claustrophobic. I think I am a claustrophile provided it doesn’t extend to my feet. 
Makes sense if it’s all the stimuli that the autistic person can’t handle; this would block out all that. Plus it would provide comfort for kids who are tactile defensive but might still benefit from being held in something.
I like cluttered, small spaces. There’s so much crap on my bed (blankets, pillows, stuffed animals, occasionally a fiance) that there’s barely room for me, but i have to have a big bed to fit it all in. I always sleep with my head under the covers, unless it’s too hot or I’m sharing the bed with something else that has to breathe. I don’t want a big house, though I grew up in one. And I earned the nickname hedgehog in college because I would fall asleep curled up in a ball under a blanket.
Under the covers?
Well, not when you’re there. … weirdo.