@builtnotbought92: We built an amazing magnetic power generation device using the housing of an old speaker, copper wire, and a plastic tube. ​We did it by wrapping the copper wire around the core, connecting it to a parallel series of lightbulbs, and using a separate circular magnet to trigger magnetic induction. #DIY #Tips #LifeHack #idea

Built Not Bought

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Monday 20 July 2026 11:24:41 GMT