Tree book shelves -- great for kids room. Enticement to read. I'd like to see it made with darker wood or painted a rich brown color and placed in a living room. Also, this is full like a summer tree, I'd keep it more like late autumn with fewer displays.
Redo playroom: indoor play"house"- I really like this idea because it takes up no more room than the table and chairs itself, could be put up in a weekend, and even gives you some added "wall space" for decorating or even hooks for some light storage