[gallery]Adafruit creates wearable electronics that are "subtle and fun to wear". Their premiere product, iCuffLinks, is a rather beautiful set of geekwear cufflinks that mimic the breathing light patterns of an Apple PowerBook power switch. Simple products like this is a great way to introduce technology-integrated (in this case "embellished") wearables into a wider commercial market. And the kicker? They can be purchased OR you can make them yourself. The iCuffLinks are open source, which includes circuit board files, schematics and CAD file posted on GitHub.
To compliment the iCuffLinks, Adafruit is currently working on a necklace version. I can't wait for that one!