This document outlines three toolkits for service design: Sense, Understand, and Act. The Sense toolkit uses empathy methods like observing and interviewing customers to understand their perspectives. The Understand toolkit structures customer insights into a journey map to analyze their experience. The Act toolkit develops visions of an ideal customer experience, then brainstorms ideas and tests prototypes to achieve those visions. It concludes by detailing the new service in a blueprint. Overall, the toolkits provide a process to understand customers, develop an improved vision for their experience, and build and test prototypes to realize that vision.