This project brings together 7 European organizations (France, Italy, Spain, Belgium, and Lithuania) around different fields (Design, free culture, fair economy, education, Digital ...) to explore new design production skills and new economic conditions through collaborative and open approaches possible through digital technologies.Those new practices are a kind of pertinent “media” to mobilize publics on the aims of valorisation and transmission of cultural heritages and development of commons. Those practices contribute to put in prospect the Professionals of object and creation in a shared european economy. The project aims to develop into “DO IT TOGETHER” Open Source Design prototype whose results will concern all kinds of people and shareable with the largest number.Helped by the experience of the partners and new urban areas promoting sociability, CHIC melts the uses, users and digital technologies in three areas of work with:An area of objects creating on the thematic of the stamp: through interprofessional workshops 2D production model design and stamps / 3D object, prototyping of a digital press for their reproduction,An experimental area of stamps use: production test with the public (young people and their families, citizens and non-professionals used to digital technologies), raising public awareness by events in the project (seminars, public debates) at local and International level.A digital space: designing a web platform as a project management tool to collect and exchange, model and circulate the results via internet.