Shop window | I made this window based on renewable kinetic energy. The idea is that there are circular disks cut out of the glass, allowing wind generated by the passing public into the window, which would create enough wind to power the turbines.

This provides enough energy to power the lights in the windows, saving money and the environment. I am also implying how wind turbines can look unsightly, so do your best to save energy and power as this may one day be a very common landscape.