This “phone” does not need electricity and it doesn't ring constantly. It consists of two cardboard tubes and a cotton cord. Sound waves pass from one box to the other along the taut cord and thus sound is transmitted. The boxes are made of recycled cardboard made in a small factory in Switzerland. Lots of fun on the phone!

The focus is on using traditional manufacturing techniques and natural materials such as wood, porcelain, straw and paper in the individual products.