The SCOBY Breastplate is a sustainable, interactive wearable that was slowly grown and fabricated from kombucha SCOBY (Symbiotic Culture Of Bacteria and Yeast) biofilm over the course of 13 weeks. When worn, LEDs embedded within the SCOBY breastplate produce different light responses in reaction to the wearer being hugged, tapped, or brushed. Through growing this wearable piece, we challenge the fail-fast and rapid prototyping trends that inhabit creative technology and instead explore what it means to design at the pace of another living organism.