I like the channel, Mars Project Team, a lot. They are really good at making miniature buildings out of real building materials like concrete and then furnish them with usable diy-furnitures. The miniatures that they make are very much like a livable real houses, but just in small scale. I remember the first time that I saw their videos, they made a tiny water sink, that is actually usable, like water can come out of the tap by turning the switch on. It was purely impressive, because I’m kind of used to seeing miniatures that resembles the looks of the full scale objects but are lack of the utility of the real thing.
This is a video of making a small fan, that’s actually usable by plugging into the outlet on the wall of the miniature house.