Extra-geeky gifts

PC World offers some suggestions for the mega-geeks in your life, including this (kinda cool) wearable:

4. Wi-Fi on the Fly
Wi-Fi Detector T-shirt
Wonder which of your neighbors has Wi-Fi? Forget wardriving. Put on Think Geek's stylish black Wi-Fi Detector T-shirt ($30), and you can warwalk. Electric blue bars on the front light up when you encounter a wireless network; the more bars that light, the stronger the signal. (But it won't tell you whether the network is secure--sorry.) When it's laundry time, you can remove the detector, which draws power from three AAA batteries housed in a compartment that slips into an interior pocket. Wow your friends, impress your neighbors, and convince your spouse that marrying you really was a terrible mistake.