Seize the initiative, this website has plenty of tips, like how to make a batteryless solar fan and other diy tips.
" A free source of information on how to create your own homemade projects on solar, hydro, wind, tidal, geothermal or other green power."
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suttree
Sombrero Fallout 904c2f2f-4e79-40b4-8830-16b4909b1948 The wearer of this fallout will receive many funny looks, but there can be no doubt that this is truly a king Sombrero in a world reduced to poor imitations.
Love the solar battery-less fan idea. Brilliant! Like ecosrights said, the only time you use a fan is when the sun is shining.
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