<p>A sociomaterial view of education asks us to pay attention to the agential role of materials and materiality in producing learning futures. If we are to pay attention to materials, then we must attend seriously to waste. This study offers waste and cleaning as a conceptual framing to contribute to how we imagine future postdigital classrooms. It critiques common sociotechnical imaginaries of frictionless future classrooms and examines how the politics of visibility within the university dictates the valuing of certain labour and practices. Within a symbiotic autoethnographic methodology, the study uses collaborative speculative scenario design and speculative fiction as methods to fabulate scenarios that surface waste materials and centre cleaning labour in the imagining of future postdigital classrooms. The study argues for an ethics of care to be central to the imagining of future postdigital classrooms based on speculative experimentation with new relationalities to objects, spaces/places, and multiplicities of more-than-human others.</p>