The Service Sandbox is a visual, playful, co-creation tool that allows individuals to explore digital services in a tangible and interactive way. The sandbox can be used to test an existing service or to create new ones. The resource is oriented toward designing interior environments, especially digitalising environments, but could be used more broadly. The tool consists of three phases (build, ideate and define), plus a pitch template for taking the process one step further. According to the authors, the tool can be used when design professionals and other professions want to work and co-create together in order to achieve alignment and create a common language between them. The Service Sandbox can be used anywhere between 3 hours to a 2-day workshop depending on the requirements and goals.