Wingrider Bicycle Clip
To add a little Greek god/comic book style to your daily bike commute, these winged straps will do the trick. They'll also do double duty by protecting your pant cuffs from rips and grease stains caused by the chain. Designed by Droog co-founder Gijs Bakker (who got his start designing jewelry), they're made with a reflective PVC for night safety that's also weatherproof.
The pair is $15 from the Conran Shop.