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| 14 |  Thermo-Electric Generators! Make Electricity W/Fire! Peltier Powered! w/lots of experiments! DIY | | 738 | Estados Unidos | 89 |
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| 15 |  12v High-Speed Desk Fan with DIY stand! AC/DC Pwrd. (solar/battery) - very high airflow! | | 398 | Estados Unidos | 88 |
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