Flow is a tea dryer designed to improve tea drinking into a more eco-friendly behavior. It is inspired by the traditional Chinese culture. The old generations use the used tea leaves as the filling material of the pillows, or use them for cleaning and remove odors. Drying out the used tea leaves again is the stepping stone to the secondary use of tea leaves. By simply knocking on the border of the Flow, the daily used tea leaves can be air-dried without any extra energy and waiting for their second life.