This nine-ounce drive is built for hard knocks inside and out-the latter thanks to an aluminum case and shock-absorbing rubber bumpers. It's hard to lose despite its sub-4x6 dimensions because it has flaming-orange trim. Operation is both "plug-and-play" and bus-powered. Hi-Speed USB 2 and combined FireWire 800/400/USB 2 versions are available. From $170 (80GB) to $360 (120GB).