Co-design draws on the expertise of researchers, designers, developers, and users. This diversity of perspectives is critical to understanding both users' needs, and service processes and technologies. Effective co-design activities benefit service design projects, the users, and the library. Immediate benefits include generation of better ideas with high user value, and improved knowledge of user needs. Longer-term benefits include greater user satisfaction, and mitigation of change aversion. Using the library homepage as a case for a design project, workshop participants will try their hands at joint creativity to explore options and produce validated iterations ready for prototyping and beta testing.