This document summarizes a case study of co-designing a social media service called Monimos to promote civic participation among immigrant communities in Finland. A participatory design process was used involving workshops with immigrants and community organizations to develop concepts for the service. Key aspects of the process included open online collaboration during design, addressing challenges of integrating online and offline engagement, and ensuring community ownership of the project. The goal was for Monimos to serve as a virtual meeting place combining information sharing, civic participation, and social aspects to empower immigrant networks and encourage collective action.