On July 19th 2023, students of the digital citizen science (DCS) seminar presented their proposed solutions for the sustainability challenges articulated by citizens on the wir-forschen.digital platform. The challenges were collected around the four major themes of climate-friendly travel, energy-saving media use, climate-friendly office, and communication & participation in the energy transition. The participating students followed a human-centered design process in order to deliver prototypical solutions. The final presentation took place in the Open Space Triangel. The resulting prototypes will be made available through the wir-forschen.digital platform and the corresponding DCS project. A follow-up presentation will take place at the KIT Science Week.