I painted some of it and added scrapbook paper as wallpaper and flooring.
To adhere the wallpaper, I used matte Mod Podge. I put a thin coat on the back side of the paper and several thin coats atop the paper once it was stuck in place.
I also painted them a wood peg family in their likeness for their house. I used these wood peg dolls from Goose Grease on etsy. My parent's gave the girls furniture for the house, so they are all set to play.