Abstract. Participatory design methods may help account for the ethical implications of persuasive technology. But how can participatory design methods both address ethical issues and lead to effective persuasive technologies? This paper presents the early stages of participatory design with a college EcoHouse. I discuss concepts resulting from an Inspiration Card Workshop [1], finally considering further development of participatory methods for designing persuasive technology. Key words: Persuasive technology, participatory design, Inspiration Card Workshop, conceptual design, design materials