I operate a lot of my work now from a portable hard drive, as a gift a few months ago, it was a 100gb Seagate Portable Hard Drive and it was all enclosed and that good stuff. Works great too. I accidently found the receipt for it at my parent's home and it cost them about 90 bucks after shipping and freight insurance.
http://www.tigerdirect.com/applicati...|c:136|&Sort=4
That is where they bought it from and this is it, looks like the price went up or it was on sale.
http://www.tigerdirect.com/applicati...827193&CatId=0