ThinkGeek has unveiled a new case for the iPhone that adds a Bluetooth keyboard that flips from under the phone called the TK-421. The case can be had for about $50 for the iPhone 4 and the 3GS.
Sonos has debuted a new dock for the iPhone called the WD100. The dock is able to stream music wirelessly from the iPhone to other rooms.
A seller called HoobyGroovy on Etsy has some cool handmade cases for the iPhone. The cases look like Goomba and a couple mushrooms from Super Mario and sell for about $20.