If like me you keep misplacing USB pen flash drives this might be of interest, seems cheap.
Ci-Box 4GB 1" Micro Drive
Carry four gigabytes in your pocket with the Cibox USB Micro drive. No need for batteries, charging, as all the power is sourced through your PC's USB port. Astonishingly lightweight, the Cibox 4GB USB Micro drive's data capacity has enough room to hold over 1,000 MP3 songs or 4,000 photos. Whatever you decide to store on it, the USB 2.0 specification gives a high speed performance whether transferring files to or from your PC or Mac. Stunningly small, the Cibox 4GB USB Micro drive can fit in the palm of your hand.