ECR4Kids Indoor/Outdoor Peek-A-Boo Caterpillar This purple caterpillar is adorable! Toddlers will love climbing inside the ECR4Kids Indoor/Outdoor Peek-A-Boo Caterpillar ($200) and looking through the various holes in his back to spot you. Image Source: amazon.com ECR4Kids Indoor/Outdoor Peek-A-Boo Caterpillar $200 from amazon.com Buy Now