In the village of Kyllini, also known by its older name Bousi, there is a fully functional fulling mill. Fulling mills and watermills are simple water-powered inventions from the pre-industrial era, dating back to the time of Ottoman rule. As the name suggests (water + fulling), these mills were primarily used for cleaning heavy woolen garments, rugs, and carpets. The construction is relatively straightforward, belonging to the "rotary" type, where water descending from a height is forced through the mouth of a barrel-shaped conduit – the "vageni," traditionally crafted by itinerant cooper smiths or artisans from Lavka – into the wall of a receiving basin shaped like an inverted truncated cone, known as the "fylaki." This setup creates a spinning motion. In essence, the mechanism harnesses the continuous, forceful pressure of water through the conduit, which swirls vigorously inside the basin.

Visitors to the area, especially in late spring or early autumn, can experience this traditional craft in the unique and particularly captivating natural environment of Kyllini. The cool air and lush greenery provide a perfect backdrop for a nostalgic "dive" into tradition. Watching the swirling water as it tumbles and spins the clothes is a captivating sight, taking one back to a bygone era, worn by time but still vibrant in memory and lessons.