Plastic and plastic waste are of particular importance in the context of environmental and waste problems due to their quantity, long decomposition time and the spread of microplastics. They thus offer an ideal introduction to address and work on various environmental problems and contexts. In addition to the topic of microplastics, the avoidance, recycling and upcycling of plastic waste is attributed a special role. In contrast to linear systems, the circular economy aims to preserve substances and energy in the system and to put them back into value. Thus, the concept offers numerous approaches for interacting with the topic of plastic. This also includes aspects of education for sustainable development. The Plast.Ed project (Oct. 2022 - Sept. 2024) implements a plastic recycling workshop at the University of Trier as a real-world laboratory and extracurricular learning location for education for sustainable development.