Update: Somewhat annoyingly Think Geek have stopped selling this GPS tracker, however there is a huge selection of alternatives over on Amazon.
This must be one of (if not the) coolest spy gadgets I’ve ever reported on. It’s sort of a cross between a USB memory stick and a GPS receiver and what it does is store where ever you take it on the flash memory.
The Portable GPS Tracker is pretty small so you could either always carry it on you or use it in 007 spy mode by planting it on a person or vehicle...