
Do you carry a USB thumb drive with you? If you don't, you should. These have fallen radically in price, and can be useful in numerous ways. For about $150 you can get 64GB drive that fits in your pocket, and keep it loaded with countless free, open source applications, or versions of Linux that you can run on any computer any time. With a 64GB drive, you can also easily back up files to your thumb drive, and conveniently transfer files back-and-forth between computers.