The days of staring at a blank screen to plan a complex engineering unit are over. Welcome to the STEM Gem Lab, a high-energy, hands-on workshop designed to turn Google's "Gems" into your most productive co-teacher. In this session, we move beyond simple chat prompts and dive into App Smashing- the art of pairing Google Gems with your favorite STEM tools to create a seamless ecosystem for learning. Participants will explore how to build custom AI personas (Gems) that are pre-loaded with your specific curriculum standards, competition rules, and safety protocols. We will then "smash" these Gems with digital platforms used in STEM lessons to transform AI-generated ideas into tangible classroom assets. Whether you are prepping for a Science Olympiad, a robotics tournament, or a 5th-grade weather unit, you will leave this session with a digital toolkit ready for immediate launch.