The Brett vorm Kopf is an urban tool that can help broaden one's horizon, bridge (time) gaps, and change the point of view.
The German idiom "having a plank in front of the head" means not to understand the obvious. Removing the plank in front of one's head surely helps to see things from a different angle. And two short planks can be dead useful:
With a simple folding mechanism, the plank can be clipped to any street sign without tools. The plank tilts and therefore sits safe around the signpost without a clamp or screw. The user can sit and rest while waiting for the bus, or stand on it and get an overview. This light construction can carry over 50 Kilograms.
The plank was my application project for studying product design at FH Potsdam. The plank and the blockhead signpost were built at ip industrielle produkte in Munich.