Math geeks who are also game geeks will love this calculator. It won’t help you with your Killzone game, but maybe you can figure your kill/death ratio with it. It is called the Cool Gamer Calculator, and yes it is a calculator in a shell that’s shaped like a video game controller.

It gives you all of the basics like add, subtract, divide, multiply, memory, percentage and square root. The Cool Gamer Calculator is available for $13.99. It’s the best of both worlds in one cool gadget.

This may look like an average retro calculator, but it is actually an iPhone 4 case with a super realistic looking decal. This retro calculator case consists of a clear hard plastic case plus the decal and retails for $19.50 on etsy.

Great for an April Fool’s day prank or an anytime prank. I bet it would even fool the nerdiest of math nerds. It looks very convincing. Except for the camera hole.

If anything will get you to change your existing mouse, this will. Canon has just introduced the X Mark I Mouse, a wireless laser mouse that doubles as a fully functional calculator and a numeric keypad. Bluetooth 2.0 is responsible for the connections, and it has A 1,200dpi sensor.

It’s also compatible with both OS X and Windows platforms. Get ready to crunch some numbers while mousing in November when it launches. Just £39.99 / €48.99 .

At last a green solution to all of those calculators that run on gas. Think about it. No more carbon monoxide fatalities during math class. No more having to take your calculator to the mechanic to get an emmisions check. At last, we can cleanly crunch numbers.

So I exaggerated a little. This water powered calculator is still cool. It uses three water batteries for power which have two electrodes inside made from a special alloy. When immersed in water they produce electricity through a chemical reaction.

Even though there isn’t any real reason to wear one today, calculator watches always bring back memories of the 80s. If you like the retro style of a calculator watch on your wrist, the Cal-Q-Tek 2000 calculator watch should do nicely.

The style is pretty cool and at just $18, you won’t need a calculator to figure out if you can afford it or not. Heck it may even come in handy. Maybe at the grocery store or when you balance your checkbook.

This is the best way to play video games while at school. Everyone thinks you are doing a complex math problem, but really you are getting your game on. The only problem is, you are going to be in trouble if you have an actual math problem to do.

This mod took it’s creator about 13 hours to complete, which is understandable. Most of that time was likely spent playing Mario games and Tetris. I hope the teacher doesn’t read this.

Calculators just aren’t cool. They have long been associated with nerds that wear taped-up glasses and pocket protectors. Well, this calculator should help you nerds up your game a bit since it looks like a video game controller. All of the buttons are in the right place.

This calculator has 27 functions, an 8 digit LCD display, and a two handed design. It won’t kill zombies, or cure geek acne, but it will kill math problems dead and make homework faster.

If you want to spy on someone you can’t use a regular camera, that’s spy 101. It has to be in disguise. And this calculator video camera is perfect, It has a hidden wireless camera on the side so that you can discreetly record video and audio of your subject.

It comes with a digital receiver that has a built in LCD screen so you can see what the calculator video camera sees.

Calculators come in all shapes and sizes these days. One of the geekiest and neatest may just be this Lego calculator. It could help you count all of the Lego pieces that you have stored in that dumpster next to the garage or count how many bricks it will take to make a cool statue.

This one comes in four colors, red, blue, green and black. Not sure if you can actually connect your Lego pieces to this though and get creative. The building block calculator will be available in August, but you can pre-order it now for $27.

Are you a fan of Texas Instruments’ graphing calculators? Well, now the TI-83+SE, TI-84+ and TI-84+SE calculators can do more than make calculations. Now they can play Nintendo Game Boy games thanks to Brendan Fletcher’s emulator known as TI-Boy SE.

It runs on TI’s Z-80 based graphing calculators thanks to similarities between the CPUs of the two systems. The emulator includes three zoom modes, two sprite tracking modes, grayscale or black-and-white palettes, two-channel sound and even the ability to save and load games. For now, only Tetris, Zelda: Link’s Awakening and Kirby and homebrew titles are supported, but I’m sure it will get better.

Numbers are an enemy to all. They force us to do endless calculations throughout our daily lives, and miscalculations. Numbers are everywhere. You can’t avoid them. By the time you have begun counting, they have already won. Because there will always a higher number then you can count.

Calculators are our only hope of staying sane as we constantly wage war with math. This one is slim yet stylish and solar-powered. And Credit Card sized. Having one the size and shape of a standard credit card will go a long way in helping you sort out this mathematical universe. No more miscalculating! Only $6.

Casio’s watch calculators were all the rage back in the day. That was a few decades ago. Casio is hoping that those days might come again and so their Databank series now comes in a whole new variety of colors including black, green, orange and white.

Of course, these timepieces are not just watches, they also feature an 8-digit calculator, an automatic calendar and 25-page data storage. They’ll cost you $59 a piece, but if you like the classic pure-black version it will cost you another $10.

So the pocket protector has gone the way of the dinosaur and horn-rimmed glasses are no longer in fashion. Why, you can’t even rock the stand-alone calculator these days because you have a calculator built into your other devices. How on Earth are you going to fly your geek flag? Getting a wedgie would probably do the trick, but that can be painful.

How about these Numeric Keypad chairs? Perfect for clandestine geek meetings, when you want to talk code or share how you gave your pet robot the ability to love. Hey, maybe you can all randomly sit and stand, while the head nerd adds up the total. Of course, some idiot would park his butt on the clear button screwing it all up. Loads of fun.

I still can’t figure out why the calculator is making a comeback, but here’s yet another example of a new twist on the number crunching device. If the HP Quick calc isn’t enough or the keyboard calculator is too expensive, this USB Hub calculator has the added benefit of being a bit more useful.

Aside from the hub aspect, with 3 USB ports, it also has some other bonus features, like a 12/24 hour world clock with alarm, a calendar and a even a thermometer. And it’s only $19, so it won’t kill you in the wallet. If you absolutely need a calculator, it might as well have a few other functions.

Seems like calculators are making a comeback, though why, I have no idea. Maybe it has something to do with the calculator in your computer and cellphone no longer working in a Mad-Max type future, after a burst of Gamma radiation hits the planet or something…

At any rate, HP wants you to be prepared, going so far as to offer a variety of colors. They’re small enough to fit on a keychain too, so if you have to battle zombies you won’t lose it. Thank God for HP. You’ll be the only survivor who can do math.