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Add a motor from a CD player or similar along with a few calculator solar cells and a BEAM robotics circuit.
Bonus points if you could have it actually perform something useful at home.
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If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler...
Allie Moore and I have a combined carbon footprint much smaller than that of one average American...
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