Greiner Packaging, part of the Austrian-headquartered Greiner Group, is a major European producer of plastic and plastic-cardboard packaging, particularly for the food and consumer goods sectors. The Slušovice plant in the Czech Republic is one of Greiner’s leading innovation hubs, specializing in single-use food containers, including yogurt cups and beverage packaging. With a corporate vision firmly aligned with circular economy principles, Greiner has declared that building a sustainable, closed-loop business model is central to its future. The Slušovice facility has become a testbed for turning this vision into practical reality—most notably through its pilot program to close the loop on plastic cups used at large public events. The Slušovice site developed and piloted an event-based circular collection and recycling system designed to recover single-use polypropylene (PP) drinking cups: Targeted Application: Focused on single-use beverage cups distributed at festivals, concerts, and other large public gatherings. Collection Mechanism: Custom-designed cup collection bins were deployed at venues. These featured cup-shaped chutes and signage to encourage users to deposit cups cleanly and efficiently. Cups were stacked inside, reducing volume and contamination. Recycling Process: Returned cups were transported to the Slušovice plant, washed, shredded, and reprocessed into new PP material, used to manufacture new packaging or even new cups. Closed Material Cycle: The initiative demonstrated a full loop: cups were distributed, used, collected, and returned to Greiner for recycling, closing the resource cycle without the need for complex sorting or third-party reprocessing. This approach turns a typically linear single-use product into a traceable, closed-loop resource, demonstrating how simple system design and user engagement can achieve practical circularity.