If you mean a computer case as in an enclosure for a PC then I use newegg.com. They'd also sell bags for laptop computers, although Amazon.com would have the best selection. You have to be careful to get a bag that is right for your laptop however. If it doesn't fit just right you don't really want to buy it.
One can purchase plastic carrying cases on many internet sites. Some Internet sites such as PFC Cases, Bel-Air-Cases, and Carry Cases Plus offer great deals on plastic carrying cases.
Yes you can purchase carrying cases for any sort of personal belonging which is required. Best way is to visit a store that sells carrying cases or even stationary stores.
One can purchase sturdy 17 inch laptop cases through a local computer store that specializes in computer extras. You can also purchase this item through a major retailer as well.
You can purchase a longer cable to accomadate you. In some cases you can purchase an adapter and an extension cable.
Toshiba has the Toshiba Elite Nylon Carrying Case.
Accessories that are available to purchase for the Samsung Convoy include protective cases, charging wires, carrying cases and batteries among others.
One can purchase muffin cases from many different stores and retailers. Some examples of stores that sell muffin cases include Party City and Kitchen Kapers.
There are several carriers of pink leather laptop carrying cases, but the more trusted sources would likely be eBags and Wayfair, both of which are trusted by Google.
There are a few places where one can purchase slim CD cases. This includes large stationary stores such as Staples as well as online on sites such as Amazon.
Hewlett Packard has great computer case selections. Whether you want a carrying bag or a heavy duty one, Hewlett Packard has one for you. Mine goes everywhere with me.
You should look on Amazon.com for the accessories you want. The accessories you should purchase are covers and faceplates and pouches and carrying cases.
A person can purchase a case for their PDA on the Internet. Amazon is best site you can go on to purchase a case. Amazon has the best prices and a variety of cases for your PDA.