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.

Most devices already have a calculator app built in, including your computer. That’s why most people have no use for a stand-alone calculator. But if you do want or need a number cruncher that’s free and untethered and all independent like, this is the one to get. The 10-key calculator. It’s what a calculator would have looked like if there had been one built into your keyboard number pad. Instead of soft squishy keys, you get the clickety clack of a keyboard, which I’m sure won’t help it fit in your pocket and it will only annoy fellow nerds. All of this backwards innovation will cost you $88. Oddly, it’s only available in red or white.

First off, a USB calculator is pretty useless. I mean wth, are you too lazy to use the calculator app? Maybe it’s for our parents and grandparents who may not be able to find it. Plus, everything has a calculator built in these days.

At any rate, stupid as it is, this one can be forgiven, because it also works as a 4 port USB hub. It’s available in hot pink(For those who want the color without the Kitty), white, or black. For $16.00 the USB Calculator Hub is an affordable gift for those who may not be able to find calculator app on their own.

It’s been a long time since I’ve seen a scientific calculator wristwatch. They haven’t been around for about 20 years or so. Dave Jones remembers them well: “Back in 1987 or so I got a Casio CFX-400 scientific calculator watch, and I wore that watch to death for 10 years until the band support on the case broke. The CFX-400 was the best, and last scientific calculator watch ever sold.”

So if you’re like Dave, and has missed the calculator watch, there’s good news. He’s revived the scientific calculator wristwatch as a DIY project. His uWatch features a roomy LCD that can display 16 characters across, two lines deep, and it can handle all your fancy RPN/Algebraic scientific needs. You’ll need at least a bit of technical know-how to pull it off, but in the end you’ll have an awesome geek wristwatch that’ll catch the eye of lady nerds.

Geeks love robots, despite the fact that they will one day destroy us all in a fiery Armageddon. Some geeks also love calculators. Combine the two and you’ve got any early geek christmas. These calculators are designed to look like older style robots and they have alot of personality.

They have a magnet that can hold paper clips, the can hold notes and they have movable hands and feet. They even sport a detachable push button night light. Oh yeah, did I mention that they are also calculators? You can get them in three colors: white, blue and lime green. The price is $14.95. What are you waiting for? Go get one!