Sunlight-powered 'bulbs' made from plastic bottles light up homes | Ethical and green living | The Guardian
Guide: Make a Solar Water Bottle Light Bulb : r/selfreliance
Solar Water Bottle Bulbs
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Guide: Make a Solar Water Bottle Light Bulb : r/selfreliance
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Sunlight-powered 'bulbs' made from plastic bottles light up homes | Ethical and green living | The Guardian
