"'I wrote to the zoo to send me a pet. They sent me a...'"
"'He was perfect! I kept him.' Right then, time for bed."
We've also seen {{amazonurl|isbn=1509802177|title=Dear Zoo Book and Storyblocks}} - a cube containing a small copy of the book (with flaps!) and ten blocks (which stack inside each other for storage) which correspond to the story. Great fun!
If you're building a basic library of picture books, another must-have item is [[The Tiger That Came To Tea]] by Judith Kerr.