I am already wrote about my friend's project, but we leave the island soon, so there the result for now.
That's the model of the big sphere:
Guys made a lot:
Put some silicone between parts of sphere:
Making bathroom and the bed:
When the rain comes:
At this moment sphere already have water and electricity, bathroom and bed.
When Ivan will finished this project, I'll write about that. But now we really happy that we take a part of this project. Thanks to Ivan and OneLoveBar!