If you want to get your USB stick into a secure environment for your favorite corporate espionage activities, the Thanko Spydisk could be just the thing. This innocuous looking pen packs an SD card reader / writer and 512MB of flash memory.
The USB connector is hidden safely within the cap of the pen. Simply unscrew it and plug in. 512MB should be ample space, but if you do need more, plug the SD card into the slot concealed behind the clip.