The idea came to mind some time ago before I've even heard of this challenge, I started building a cute victorian doll house then I abandoned it without decorating, I got bored quickly. It would be a useless house for normal game play after all. One thing I realized building it, to make it look like an actual doll house you need to enlarge the furniture because kids doll houses usually have huge furniture compared to the scale of the rooms, you can put 1 armchair, 1 lamp, 1 bookcase and they fill the room. That's what makes doll houses look cute.