This zipline project from The GeekDad's Guide to Weekend Fun was actually written by our very own Jamie Grove, head of ThinkGeek's evil schemes and nefarious marketing plans, so needless to say it's both evil and nefarious. But Timmy didn't get it right with the USB cables. And it's really more like a swing. More on GeekDad's Guide: http://j.mp/j4vwz1