Hong Kong Baptist University Affiliated School Wong Kam Fai Secondary and Primary School (HKBUAS) organized a STEM competition for its students to promote STEM learning. Our Una boards were used by G1 students to practice coding and to control robotic cars. Students wrote their own program on Una to control the robotic car. They were challenged to hit a bottle by maneuvering the car inside a maze created by Una boards. Without the boards, the cars might easily crush down the paper-based walls. However, our Una boards are specifically designed to be adaptive and durable for a wide variety of STEM activities, including classroom teaching and competition. We were glad that the students had a great time playing with the Una Boards and created their own maze.