Reading the Pursuits section of the Wall Street Journal for December 23, page P2 showed some USB gadgets. Three items were profiled and of those I have a version of one: USB Microscope QX5. I have the one developed by Intel when they were making educational toys. It is a great product even if it is packaged like a toy. I have posted some microscope pictures taken with it on earlier blog posts.
The gadget that caught me eye though was the USB missile launcher from thinkgeek.com. It reminds me of a Hawk anti-aircraft missile battery used by the military. Apparently, you can use the computer to aim the battery and fire it. I guess if someone enters your work area, you can unleash a foam missile barrage to drive them off.
I went to the Think Geek website and they also have the USB rocket launcher which has larger range than the missle launcher and the laser guided missile launcher to help improve targeting accuracy. What an arms race they have going!