Letting young children play with iPhones is an easy way to keep them busy, but the risk of damage is always a serious concern for parents. Griffin's KaZoo for iPhone 5 ($25) helps alleviate that issue by wrapping the device in thick, protective silicone that's been colored and molded into fun animal shapes. Available in elephant and monkey variations, the case covers almost all of the device except for the screen, camera, and bottom edge without limiting…