I discovered the Wonder Time site this week and was especially interested in this article about designing homes for special needs kids. They highlighted thoughtful changes that make a big impact on little people such as raised beds in the garden, indoor swings, and moving the furniture to the sides of the rooms versus filling the interior spaces as is more correct from a design perspective. (but is a nightmare for wheelchair navigation.
I especially loved the built-in dollhouse and my head is abuzz with ideas for same. I would like to get a wood house for Tess but the truth is most of the houses I have seen (in plastic or wood) are just awfully small for clumsy hands to work in. This one looks much more user friendly and hey, you can't knock it over. : )
Starry Sky Journal 
One easy alternative is a pre-made bookshelf. We painted each cubby like a different room and then just screwed on a cardboard triangle roof that could be removed later. We repainted the bookshelf when the girls outgrew it!