StrollerCubes modular & expandable STEM accessory

📐 The Stroller STEM Cubes: A Modular, Universal Busy Board SystemProject Overview and Design MandateThe Stroller STEM Cubes project addresses a common real-world challenge: keeping young children constructively occupied during extended periods in a stroller. This design is engineered as a modular, expandable, and universally compatible accessory, offering a genuine developmental and entertainment solution for parents and children. The primary design goal was to create a durable, easily 3D-printable system that integrates STEM principles into a fun, tactile package, with the core mechanism supporting future expansion. Core Engineering and FunctionalityModular "Click-and-Play" System:The central innovation is the secure, yet user-friendly, interlocking mechanism. Each cube is designed to click firmly into the mounting rail, providing a satisfying confirmation of engagement.This dual-functionality allows children to interact with the cubes while they are securely mounted, or to e