We setup a free mobile phone charging station in Einstein's Garden at the Greenman Festival this year. People really seemed to enjoy the fact that it was free! However most of the power they were generating was actually charging a deep cycle battery! This battery was then used to power Minima's accompaniment of a nature documentary as well as a number of presentation and short films throughout the day! Everything worked perfectly, so I'm hoping we can do something similar for the Greenman next year.