Peddle Powered Sound System
There are so many ways to demonstrate efficient uses of energy, and this one speaks volumes (BWAH!)
John and crew has been working on this system for a few months (years?) now. The results are killer. Peddle while charging the batteries for some park, street or beach party. Might be a bit loud for an apartment party… but I think that could work too, as long as you plan on moving out shortly afterwards.
