If you have an aspiring spy with green leanings on your holiday-gift list, take note: A company called Chinavision is offering a solar-powered wireless spy camera pen. As described by the company, the device is a fully functioning pen -- except it has an inconspicuous built-in wireless mini spy camera. "Just whip out the pen, twist the cap to start the wireless transmission, have the included MP4/wireless receiv As described by the company, the device is a fully functioning pen — except it has an inconspicuous built-in wireless mini spy camera. “Just whip out the pen, twist the cap to start the wireless transmission, have the included MP4/wireless receiver within 20 meters, and you can view and record everything that your spy camera pen sees,” the company says.The camera is powered by a Li-ion battery, which in turn is charged by solar energy. Pricing starts at $328.76.If this psuedo-green gadget doesn’t appeal to you, consider some of these other eco-friendly gifts for geeks. (Thanks, by the way, to Ubergizmo (and various other green blogs) for pointing out the Chinavision camera pen.)Ted Samson is a senior analyst at InfoWorld and writer of the Sustainable IT blog. Subscribe to his free weekly Green Tech newsletter. Technology Industry