I just got my Blink(1) in the mail today. Its a cool indicator light that hooks into your USB port.
There is a ton of potential with this device. You can utilize the Blink1Control2 application to setup event polling triggers or just play around with the colors. (e.g. Show red color when a specific email is received)
Or you can enable your device to listen on a specific port, which would allow you to update the device remotely via a curl command. (e.g. Jenkin job failure) You can find the URL summary here.
Another option to using the light is to integrate it into a program, which would allow for more customizations. Pretty easy to do with Python. The Blink Python lib can be found here.