Elmo, Abby, and Chris are helping Zoe make a habitat for her new pet gecko, Gary. They fill a terrarium with soil, moss, rocks, and branches but are missing a hiding place to keep Gary cool. This is a problem! They wonder what they can use for Gary's hiding spot. What if they use an empty yogurt cup? Let's try! It works. They didn't give up and made the perfect hiding spot for Gary's new home.