Cryptography, the spy science of secret messages, is everywhere. Kids can learn the secrets to keeping secrets with this product, using codes, cyphers and hidden messages to communicate. "[It] comes with a step-by-step, easy-to-read manual that will guide you through fingerprinting," Janice Hudy, sales and marketing assistant for POOF-Slinky, told TDmonthly. Launch date: November 2008.