AlphaA writes -

Okay. So, this isn’t my most impressive project. But, it’s so simple and silly I believe others could have fun with the idea, just as I have. I have found something to do with unused USB ports. I call it U-S-Blink and they are quick, easy and cheap to make. This is another product of boredom. and some solder. I used an old RadioShack PCB which was laid out like a protoboard/breadboard and a Flashing LED snagged from a blinking lollypop once I finished devouring all of the sugary deliciousness.

Blinkin’ USB port – [via] Link.

Related:

LEDs LEDs LED projects!! – Link.