Un carton de plus (One more box) is a participatory design project that questions the making of social bonds in cities undergoing rapid densification. Where new neighborhoods rise from the ground, conceived primarily for their functionality, hundreds of people arrive almost simultaneously in spaces still devoid of any shared habits. The project focuses on this moment of great plasticity, this window where the common is still to be built.

Born from co-construction workshops held with the first residents of the new Praille-Acacias-Vernets neighborhood in Geneva, the project proposes taming (apprivoisement) as a playful and poetic way to build society. To tame, not to possess or merely to know, but to truly weave bonds, to return, to create rituals. From this mediation emerged five pathways, five verbs for inhabiting differently, from the intimacy of one's home to the scale of the city: to name, to anchor, to sow, to share, to notice. Each one an invitation to care, attention, and the welcome of otherness.

These five gestures unfold in three complementary forms: a low-tech cardboard kit slipped into mailboxes, a participatory poster campaign deployed across Geneva's public space, and an online platform that frees itself from physicality to connect those who wish to share their experience. Un carton de plus is a scaffold: built to build. It is meant to keep evolving: conceived to be taken up, transformed, adapted, and to give rise to new iterations in other places and contexts.