Governments and researchers spend millions of dollars trying to predict natural disasters like earthquakes and volcanic eruptions. Turns out all they really needed were a couple of googly eyes and a piece of paper. Some genius out there made this quick earthquake detection kit and it's truly a work of art. As long as the googly eyes stay taped to the wall, gravity will make sure any earthquake is quickly detected.
All they really need now is a button or something to press and sound an alarm if the eyes ever start moving around in there. However, that might be beside the point.