iPhone help!

Does anyone know where I could find some cute iPhone 4 accessories? Specifically cases. My mom has a bad habit of dropping her phone. Recently, she got an iPhone 4. I'd like to buy her a case for it but all I can find are iPhone 3 cases, which are the wrong size. (Damn Apple for changing the size of the phone!) I'm sure a few of you out there have the newfangled version. Where do you get your accessories at?