The MyFrogz iPhone cases from iFrogz are a lot of fun to customize with an iPhone app. Not that this is the only line of customizable iPhone cases available, but the way it is customized is what makes it interesting. You need to buy a code from At&T store for $39.99 to enter the MyFrogz iPhone app. Then you can design your case with the colors of your choice out of 100,000 combinations and iFrogz sends you your desired iPhone case. Though it’s quite an indirect process to buy an iPhone case, it adds certainly adds personal pun to your case in a fun way.