I have been involved in the Museomix community since 2013, a contributory event and an open and international community. During 3 days "People make Museums", 150 people gather in a museum, imagine and prototype new museum experiences. I have been a facilitator, coordinator, organizer, mentor ... there. I design actions of co-construction and empowerment with cities, networks, companies and students. I designed the mechanism that allowed the creation of the community of Les Défricheurs within the framework of the Grand Débat Citoyen of Nantes Métropole and created on this occasion the collective Ekogone, incubator of creative and contributory communities. I believe that commitment comes from the individual desire and is deployed in goodwill, kindliness and solidary collective.