There has been an increasing interest in intergenerational activities where young people and older adults work together in the exchange of knowledge, new ideas, methodologies and ways of thinking. With the leading international climate change conference in Glasgow in Nov. 2021, this paper presents an intergenerational co-design COP26 project where co-design pairs designed and made Glasgow COP26 souvenirs, exhibited and sold them in a COP26 ‘pop-up’ shop. The project delivered important learning and teaching including project launch, studio sessions, external design reviews, and prototyping.