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We think bicycle wheel-illuminating Revolights look really cool, but at $220, they're not cheap. Here's a DIY version that costs about $35 for each wheel. Instructables user Diyler uses reed magnet ...

Bike lights nowadays come in a huge variety of designs, with all of them serving the same purpose: they increase the rider’s safety on the road. But that doesn’t mean we can’t come up with lighting ...