The Open and User Innovation (OUI) Conference is widely regarded as the most important conference in the field of user innovation and brings together more than 200 researchers from universities worldwide. This year, the conference took place in Hamburg, organized by the Kuehne Logistics University. The E&I Institute, one of the leading institutions in this field of research, attended the OUI 2023 with Nikolaus Franke, Stefan Bolzenius, Richard Olbrecht, Sophie Quach, Caroline Fabian, Jakob Pohlisch and Shtefi Mladenovska. In a number of well-received academic presentations, the E&I team members presented their research on topics such as crowdsourcing, toolkits and user generated innovation in front of prominent researchers such as MIT Professor Eric von Hippel, whose works laid the foundation for user innovation research.