This toolbox is the result of the SPONGE 2020 project. Insights and practices are pulled together in terms of engaging stakeholders with climate adaptation in the urban context. It provides local (water) authorities, municipalities, NGO's, developers, housing corporations and other actors with tools to effectively mobilise local stakeholders in climate adaptation. Methods are collected to inform, to activate and to better collaboration. The projects of the SPONGE 2020 project are integrated in de toolbox.