This six week project was about feedback by physical transformation.
We developed a shower which turns its water into the medium. A faucet handle that changes its surface depending on your water consumption. And a water tap that withers if you use to much water.
All those concepts give you a direct feedback in the most important situation possible. They create awareness immediately and not when it is to late. (Like your bill does).
For me the most fun part was to build those models within two days from scratch. They might still be very abstract but they do their job and explain our ideas clearly.
Together with Andreas Burghardt and Jan Schlegel.