|Written by||P.J. Shaw|
What Makes You Giggle? suggests to the reader various possibilities for what might bring pleasure and delight. Options include a grouch birthday party, giraffes and monkeys in the zoo, a Snuffleupagus race, a wiggly nose contest, dressing up for Halloween, looking inside Oscar's trash can, playing at the pool, a Twiddlebug picnic, and Grover at a rodeo.
- The book was collected in Elmo's Ultimate Edition Storybook in 2007, and Let's Have Fun with Elmo and Friends! in 2009.
- In 2010, Moving Picture Books narrated the story and animated the illustrations. They released it for digital download with Bob asking reading comprehension questions at the end of the story.
- In 2011, the book was reissued as a Pixi-Book by Autumn Publishing Ltd, ISBN 1849585512