At the BuKo 25 conference in Hanover, with the theme "The Future of Teacher Education! Multidirectional Transfer for Innovative Teacher Education," we successfully presented the IREFLECT toolbox as a successful project of cross-phase collaboration. Using REFLECTION as a powerful tool, we made a significant contribution to the discussion on innovative approaches in teacher education and received positive feedback from the conference participants. The concrete application and practical relevance were particularly appreciated.