Sometimes, you need a cool gift. "Cool" not always is the same as useful gift. I want present one that is definitely cool and useful for mobile geeks. ThinkGeek is offering a Wi-Fi detector shirt. Wi-Fi Detector ShirtInstead of carrying an additional gadget, that will be checking the presence and strength of Wi-Fi signal before opening our laptops, we can just see the signal perception monitoring with our own T-shirt. The glowing bars on the front of the shirt dynamically change as the surrounding wi-fi signal strength fluctuates.Product Features Glowing animated shirt dynamically displays

Let's face it - the world is not a safe place. But following the lead of Batman, a geek's best defense is often a gadget. And in this case, it's a gadget with one heck of a bite. The ZapCam - YouTube Tazer packs a non-lethal 60,000V bite, to be exact. It shoots its barbed tipped darts out up to 15 feet on insulated wires (so only your attacker gets the juice). And for added safety, the integrated camera (activated the moment you disengage the safety mechanism) will record a full color video of the entire incident and upload it (via Bluetooth 2.0 with your cellphone) straight to YouTube.