The breathing action of the light on some laptops is really soothing. I guess that’s because it does mimic breathing. In any case, you can grab these iCufflinks that breathe and draw attention to you at your favorite top notch party. Not wanting attention? Well, then leave the battery out.
The sharp looking cufflinks are cut from aluminum and run on a typical watch battery. It’s an open source design, so you can hack and mod it to your hearts desire. $129 from Adafruit Industries, and here’s the vid: