Janitors have a thankless job no matter where they are.
This project will remind students that we need to appreciate the work that they do. This would be appropriate for students grades 3-12. The book is about a janitor that is tired of his job and goes to an imaginary place. Then he comes back and realizes that he is needed and that the school misses him greatly. After the book is finished have the students compose a letter to the janitor of the school.