Friendship book

Friendship books are small booklets made by stapling paper together. They are decorated and the person who starts the book writes their name and address as the first person sending the book. Most people hope to see the book again once it is full so they add their return address to the back cover of the book too. Some people find friendship books fun, because you can see where they have been in a trail back to the original sender.

See also: Pen pal