Minds@Work introduced the Digital Wallet at CES. This is one of those ideas that is really simple but very useful.
The Digital Wallet is about the size of a paperback novel and weighs around 13 ounces. It contains a 2.5-inch, 6-GB hard drive, a self-contained rechargeable battery, LCD display and a CompactFlash card reader. The idea is that instead of buying multiple memory cards or lugging a computer around, you can take the Digital Wallet along with you and transfer the contents of any memory card to the device. It transfers data at about 2 MB a second. Once you get back to your computer, simply connect the Digital Wallet to the computer via USB and it auto-mounts as another hard drive!