What's that, little Billy? You say you want a fancy Xbox 360 for your birthday? I've got something even better!

I remember the days when good grades were the great motivator, the difference between getting the video game system you always wanted, and getting something like this. Don't worry, parents; it's called the Cool Gamer Calculator, so your child will love you for giving him a reminder of how hard math class is instead of an Xbox 360 and Call of Duty: Black Ops.

Plus it's only $13.99 at Perpetual Kid! You just said nearly $300. The only thing kids appreciate more than school supplies? Saving money.

Cool Gamer Calculator [Perpetual Kid via Ubergizmo]