We read some great books about building a home and then we turned a box into a house. I let him paint it inside and out and design where the windows and doors go. We also read "Hermit Crab finds a Home" by Eric Carle. We talked about different kinds of homes and what homes animals live in. Then we looked through magazines to find animals and their homes.
Another great book is the "Napping House" by Audrey Wood.