If that digital SLR camera is weighing down your bag or the childhood dream of being a part-time spy is still alive, check out the official world's smallest digital camera from Hammacher Schlemmer ($100). Measuring at just over an inch in each dimension and weighing a half an ounce, the camera fits nestled on a fingertip.
The tiny lens actually turns to manually focus on an image and takes 2 MP pictures at 1600 x 1200 resolution. Record AVI video at 30 frames per second at 640 x 480 resolution. A 2 GB micro SD card is included in the camera along with a USB cord to charge the camera's battery, which can function for up to 30 minutes on a one-hour charge. Finding a camera bag small enough to not lose this gadget is your next mission.