Envisioning alternative futures and desirable worlds is a core element of design that must be cultivated, especially when a deep transition of practices, values, and power is necessary for vibrant and just future lifeworlds. In this paper, we contribute towards fabulation as an approach for design futuring that foregrounds feminist commitments and more-than-human concerns. Analyzing two fabulation case studies around biodata and bodily fuids, we ofer three themes based on our process of developing these fabulations: how they engage materials, how they work to trouble temporalities, and how they cultivate imagination. We argue for the emerging potential of fabulation as an approach for open-ended, joyful design futuring, mobilizing speculative storytelling to foreground absent or neglected relations when imagining alternative lifeworlds.