They have a whack of them at newegg, some are multidrive or have features that can make them quite pricey. You don't want or need that. Just something that can handle a 2.5 inch notebook hard drive. There's one there that's 10 bucks, not including shipping and whatever taxes. It should work with your drive.
http://www.newegg.com/Product/Produc...82E16817145752