Today is the last day of Sphero's National Robotics Week sale, where you can get a Sphero 2.0 for $30 off. Normally $129.99, the discount brings the robotic ball that you can control with your iPhone or Android device down to $99.99. That's still a little pricey for what is essentially a toy, but it's a fancy robotic one. In addition being able to roll around at speeds of up to 7 feet per second, the Sphero 2.0 also contains a set of multi-color LEDs that you can light up and control. And by including inductive charging, Sphero is even waterproof.