My school had an author visit his name is Mac Barnett. He is a really famous author and he is really funny. He wrote a book called extra yarn and it won the caldacott award for one of the best books of the year. So to prepare for him coming we made yarn balls and then finger knitted them into like strands of yarn together and then we yarn bombed the school. Yarn bombing is when you go around when no one knows and you throw yarn all over the place. That is an example of yarn bombing. That is Mac Barnett.