Use your digital camera as an portable storage device
Do you have a digital camera that shows up as a removable storage device in explorer? Well, start using it as one! You can use the memory cards on your camera for storing documents, mp3's or whatever you choose to store there. Perfect if you need to bring some files to a friend, but the files won't fit on a diskette and you don't have a CD burner - just save it on the camera!