How about this for an energy efficient, self-contained studio space?
Designed by Renzo Piano, the front part serves as a living room with a pull-out sofa and folding table. Behind the partition is a shower and toilet as well as a kitchen, reduced to the necessary.
Water is collected by the house itself, cleaned and reused, and the house supplies its own power.
The building is named after the ancient Greek philosopher Diogenes of Sinope who is said to have lived in a barrel because he considered worldly luxuries to be superfluous.
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