I’m not sure what to use this for, but I love the concept. The Agate Storage Device is about the size of a car key. When you plug it into a USB port with the built-in connector, the computer immediately recognizes it as another drive attached to the computer and lets you store or retrieve files. The one linked here for $70 holds 16Mb, and it also comes in 32Mb and 64Mb versions. Cool, eh?