I always carry a portable USB hard drive with me when I’m on the run; I simply took an old hard drive out of a laptop and installed it in a cheap enclosure. It’s only a 40 GB drive, so Toshiba’s 200 GB drive looks mighty tempting. Aside from five times the storage of what I currently have, it also includes NTI Shadow 3.5 software for a simple "set up and don’t worry" backup solution. You just identify which files or folders need backing up as well as the frequency of backup and you’re good to go. You can even specify how many versions of each file you want for extra protection. At around $180 online, it’s not a bad deal for a small form-factor 4200 RPM drive.