Book excerpt: Hop! Plop! Boom! Bop! This day's fun will never stop! Mouse and Elephant know that the perfect remedy to a boring day is a trip to the playground. But it's a little tough to decide which playground ride is their favorite. With Elephant so Big, and Mouse so Small, each ride can be a bit of a challenge for the pair. The seesaw sends Mouse soaring. The swings are a total flop for Elephant. And the whirly-bird is just a bit too whirly for Mouse. It takes a little bit of trial and a whole lot of error before Mouse and Elephant discover what their favorite really is -- each other. A funny and charming look at friendship, with a simple and playful text that the youngest audiences will beg to hear over and over!