The aim of this case study is to describe the social project "Wielkie nić / The Big Thread" - the creation of embroidered messages - which has many features in common with children’s play. Just like play, it needs space, time and rules, but at the same time, also a lot of freedom. And neither need spectators. Moreover, the project - like a form of symbolic play, where children use abstract things to represent reality - has a metaphorical significance. The threads, used for common embroidery, truly connect people. They realize how much they have in common and how they need each other. This can give a sense of unity and community and even change their consciousness.