Eolian Phone charger I 'm sure some of you Maker Geeks would find this interesting

[G+_George Kozi]

Eolian Phone charger. I'm sure some of you Maker Geeks would find this interesting.

[G+_Lee Pinney]

Very timely. I've been researching this very topic over the last week. Thanks!

[G+_Travis Hershberger]

Always remember, every electric motor can also be a generator!

[G+_Midwest Concert Video]

Travis Hershberger ...and every speaker a microphone.