‘titrebSummary’/titrebAt the day hospital, we welcome autistic and psychotic children to whom we offer different workshops. Among other things, we are working with mediation in a workshop that will be a “device to think of thoughts” for these children. In the face of confusion, dislocation, fragmentation, vacuum, the workshop offers a structured space and time. The workshop becomes therapeutic because it is recognised and worn by the institution. It is because there is an institutional mental space that makes it possible to make the link between the child’s various productions that his or her ‘bizarre’ productions can be meaningful. To illustrate this kind of experience, we present the work of the year in the workshop and in particular the evolution of Manon within this group.