This is a Mutable Mobile—a fluid object designed to travel and change over time. It can be assembled and disassembled with simple tools and might gradually change shape without disappearing altogether. This object sits within the broader web of concerns of the Re-Form Initiative: a design-research project examining the responsibility of designers in the context of post-consumer plastic waste. That larger project assembles a multitude of actors—designers, architects, funding bodies, government agencies, non-profit organisations, community groups, marine scientists, students, shearwaters, molds, mills, and machines—around a common concern. A three-dimensional grid combining the ‘natural’ and the ‘synthetic’: Tasmanian Oak horizontal and vertical members are literally and metaphorically drawn together with a bespoke pin of injection-molded recycled plastic while a simple timber wedge applies pressure to the connection.