Book Trailers are a great way to promote books to students in a visual way. Teachers could show book trailers in class or TLs could have them playing in the library. Book trailers can carry a lot of impact since they have music and a "hook" just like a movie trailer. Students can also make their own book trailers later in the year.
Book Trailers- intermediate/senior high https://sites.google.com/site/booktrailers642/lesson1
Book Trailers for grade 3 and up-http://www.slimekids.com/book-trailers/