STEMability is a collaborative eTwinning project designed to make STEM learning inclusive, engaging, and accessible to all students—both those with typical development and those with special educational needs. Through hands-on experiments, coding with Scratch and Micro:bit, introductory robotics, and digital design tools, students aged 12–15 will explore the world of technology in a creative, barrier-free environment. The project fosters teamwork, creativity, and problem-solving skills while celebrating diversity in learning. As a final outcome, participants will co-create an Inclusive STEM Toolkit—a collection of differentiated STEM activities and resources that teachers across Europe can apply in their classrooms to support every learner.