July 12, 2016 Elephant & Piggie Prime Day Sale! July 12, 2016/ Stephanie Pappas Snackdinner loves Mo Willems. Today you can find lots of the Elephant & Piggie books on a great sale, with an additional bonus if you're a Prime Member. We're especially excited to try these three:If you're not already buying diapers using Prime, today's an awesome day to start, as there's a bonus 35% off many brands. Over here we're particularly fond of Thomas Easy-Ups.