The installation explores the potential of a pleated shell to become kinetic, achieving variable envelope configurations. The prototype is fabricated in corrugated cardboard and duct tape. Based on a symmetric fishbone pattern, the shell is cohesive and self-supporting. Form-finding is introduced as collective play within a small group. There are two noteworthy limits in this indeterminate series of transformations: flat packaging that allows transportation to location and enfolding that produces a minimum inhabitable capsule. In between, play constantly affects the animated envelope, informing and deforming it.