Why did I develop the last constructions in the area of furniture when I normally develop medical products (instruments)? The reason was to carry out studies on how to make large assemblies and products from a few, simple and repeatable parts. In addition to the striking design, far from the mainstream, another condition was to use renewable raw materials that have at least 75% volume. Last but not least, the products should be durable and usable. The requirements were all met or exceeded. Now the investigations follow, which prices have to be achieved in order to be able to produce cost-effectively. In the end, this should prove that it is possible to produce attractive products that also make ecological sense.