The REMODEL toolkit is targeted at companies producing products and is focused on developing economically sustainable business models through the principle of open source. While the toolkit is private-sector-oriented, some of the co-creation principles and methods can also apply to some areas of the public sector. The toolkit was published based on the experience of REMODEL with 8 Danish companies in 2018. The toolkit consists of 7 work packages and each part has a step-by-step instruction and a video tutorial as well as examples of how to work with each exercise. Using the tool, teams of 2-4 people work through the materials at their own pace and autonomously from their own locations. Each package takes approximately 4 hours to complete. Because of the introductory videos and the written guides, there is little need for a trained instructor or any previous experience with open source or design methods. The REMODEL editable source files are available via Github for download and remixing.