I live in Germany, the children here often receive a friends book when they start school. Inside the book there are pages for each friend to write about themselves and write a little message to the book’s owner. They can also add a photo or draw a picture.
The idea is that each child will have a book that has been filled out by all of their friends.
They are often themed- Minecraft, Spiderman, princesses, forest animals etc.
Do these exist in English? Because I can’t find any.