From the Dr. Seuss Collection. Dr. Seuss Book Keychains 24 Pack. Great when used as party favors or classroom rewards, these colorful book keychains feature various colors and characters such as the Cat in the Hat, Horton Hears a Who, One Fish Two Fish Red Fish Blue Fish, Green Eggs and Ham and more! Each book measures approximately 1.75" x 2.5" and is filled with blank pages for your own personal notes! Includes 24 book keychains in a random assortment of the designs shown.