The document describes a Service Sandbox, which is a design thinking tool that encourages users to explore potential interactions with a service in an autonomous way. In a Service Sandbox, users can select their own path and decide how to engage with various "building blocks" representing different aspects of a service. This keeps the user in control rather than shaping their behavior. The Service Sandbox includes templates and tools to help design different elements of a service like personas, value creation themes, sensors, interactions, and to evaluate features. It provides a way to conceptualize and storyboard a service experience from initial ideation through to presentation.