Coolmax HD-211U2 2.5'' Silver Aluminum USB Hard Drive Enclosure for $12.00, FREE after rebate. One rebate per household.

http://www.rickspcparts.com/data/shopcart7/image_db/HD-HD211U2.gif

http://shop4.outpost.com/product/4079702

Perfect for laptop hard drives from outdated laptops! Make your own USB backup drive!