Baby Rube's Opposites (A Rube Goldberg Book). Hardcover. 

This inventive board book combines the hilarious hijinks of the Rube Goldberg brand with a unique and exciting format to explore the key concept of opposites in a whole new way. On one side of the accordion-fold pages, discover 12 pairs of opposites—from hot and cold to young and old and shallow and deep to awake and asleep. Turn the book over to discover Baby Rube Goldberg’s ingenious and out-of-the-box invention that includes all 12 sets of opposites and demonstrates a “simple” way to dunk a cookie in milk! Written by Jennifer George, Rube Goldberg’s granddaughter and the legacy director of Rube Goldberg, Inc., and featuring the brilliant illustrations of Vin Vogel, Baby Rube’s Opposites is chockful of silly surprises for the youngest aspiring inventors.