I would emulate the feel of a Spielberg movie for this. We start with people walking their dog, they notice the SPHERE and stare at in shock, drop their drinks. Even the dog is into it. The SPHERE keeps traveling, & everybody who sees it is in AWE. It's fun, playful, & lightly comic, while capturing the thrill of seeing such tech in a suburban environment. When you finally show the kid as the mastermind, he'd seem SO cool. The end of the video explains/promotes the Zero Robotics program.