Harnessing Bicycling Energy
Since we are constantly trying to find ways to produce/store/save energy, why not harness it from something that a bunch of people do? My solution is to make some sort of device that harnesses energy from bicycling. You could use this energy to power a personal electronically device that you have, or even use to power yourself to go faster on your bike (no gas or fumes needed so it would not be a motorized vehicle). This also gives peoe an incentive to start biking more and to go "green". Really the possibilities are endless as to what you could do with the energy.