Where to get a customizable iPhone case?

My mom somehow broke her last phone case (she has the iPhone 4S) and she's looking to buy a new one, she's letting me pick it out and I kind of want to see if there's any sites that let you customize an Otterbox. (she needs otterbox level protection, and she's requested an otterbox) Does anyone know of anything? Or any other ideas for customizing her phone case?

Added (1). To Jeycson: Thanks! That does help! I had completely forgotten about this site, i'm going to get a computer soon and this would be a good place to find a case for that too, so i'm glad you reminded me. I wish it was possible to customize an otterbox but maybe something like this would be good.

SkinIt.ccom they let you make your own by choosing your own type of case, then picture or image you'd like to use

Website: http://www.skinit.com/

Chose case and picture wallpaper page: https://www.skinit.com/pages/apple-iphone4-cases

Page where you choose your own photo, text, and colors: http://cstm.skinit.com/?productCode=SNPIPH4X1&deviceDisplayName=LeNu%20Plus%20Case%20for%20Apple%20iPhone%204%2F4S&userId=248%2F24899086235f0393010b15c&orderXmlFile=2013Jun06020630-412980691.xml&cartUrl=http%3A%2F%2Fwww.skinit.com%2Fcart%3FuseSession%3Dtrue&webLocation=http%3A%2F%2Fwww.skinit.com%2Fcustomizer-v4%3Fdevice-abbr%3DSNPIPH4X1%26design-abbr%3DCUSTOMSK&testGroup=B&cartItemFile=cartItems.xml&skinitUrl=http%3A%2F%2Fwww.skinit.com%2Fbrowse%2Fproduct%3ASNPIPH4X1%2Fdesign%3A&

Skinit primary focus is decal skins. They provide no protection. Their cases are just ok but for that price I suggest you go with a site that specializes in customizeable cases.

If you want to design your own case with the best protection go to www.tattoomycase.com and buy an iPhone 4 TOUGH case. Use coupon code twentyfivetmc for 25% off and free shipping.

Their online customizer tool is works better from a pc or laptop rather than from a tablet.