The ELLIPSE project is a groundbreaking European endeavor aimed at transforming waste products from various industries into valuable resources. This initiative focuses on the utilization of slaughterhouse waste and paper and pulp sludge to produce cost-effective polyhydroxyalkanoates (PHAs). These PHAs can then be used in agricultural and personal care applications, leading to an innovative and sustainable approach to waste management and product creation. The ELLIPSE project represents a powerful step forward in the development of a circular bio-based economy.