Discovering European Culture Boxes is a collaborative eTwinning project that aims to promote intercultural understanding, respect for diversity, and European identity among students aged 11–14. Partner schools will exchange physical culture boxes containing typical items or symbols representing their country’s heritage and daily life, as well as e-cards and other digital material. Through presentations, creative tasks, and discussions, students will explore similarities and differences between cultures, fostering open-mindedness, curiosity, and appreciation of European diversity. The project encourages English communication, digital skills, teamwork, and active citizenship while highlighting the EU value of United in Diversity. The project is a stepping stone to a future Erasmus+ project.