This minimalistic piece by Finnish designer Timo Niskanen was shown at the DMY Berlin festival this week. Called Change for more reasons than one, this coin deposit lamp encourages people to turn the light off after leaving the desk. Envisioned as a sustainable lighting solution for public places (libraries etc.), Change can definitely find its place in a private home as a symbolic reminder of our ecological footprint (and our electric bill). This clever and thoughtful design comes from Niskanen’s interest in human behavior and specifically, how it can take acount in design process. Here is how the designer explains his creative vision:  ‘We are surrounded with complicated and unnecessary things. I think a good product feels natural – it only bears the essential. A good designer creates an experience out of something simple and functional. An experience that is meaningful.’