good idea! though i personally would change the bearenstein bears "new baby" out for a different one. that book, although i'm a huge fan of the BB series, isn't really great :( the rest of the ideas (and the post previous to the big sibling kit for the parents is great!!)
I remember reading all the Bearenstein bears books I could get my hands on growing up. My favorite one was where they moved from their cave in the mountains to their current tree house. I would sit there and imagine how awesome living in a cave or tree house would be.
Berenstain Bears happy meal toys. I didn't have these, and don't even remember them. I'd love to have them now to display in my classroom. I collect story book characters to go with my children's books. They help young readers relate better to the stories.