To our our lab members with a shop full of bike parts, check out this creative reuse. A lot of designers are using old gears and chain rings, but this is a much bigger scale. For me, it's the bright red hands that make all the difference. Available (currently sold out) from the here or the here, where you can also find clocks made from an assortment of vintage computer, bike, and audio components. I also really like this turntable clock.
Image from Stuff Made from Stuff. Thanks to NotCot for the tip.