This document discusses developing principles and tools for a responsible Internet of Things. It notes that physical things have physical consequences in terms of maintenance, sunsetting, vanity, security, privacy, and unknown risks. The document advocates developing principles for responsible design and making things, increasing choices, and empowering consumers with information to make informed decisions about trustworthy connected products and companies. It promotes the work of organizations and initiatives applying these ideas in practice through responsible product design, certification programs, and convenings for practitioners.