iPhone Shutter Grip
The iPhone Shutter Grip($40) attaches to your iPhone 3gs, 4, 4s, or iPod Touch via the dock connector, thus granting you easy access to a dedicated shutter button. My only complaint is how you HAVE to use the Belkin’s LiveAction Camera App to take photos. Not that this would slow most down, but having that as a limiting factor might stray some from buying this accessory.
Available on PhotoJoJo, $40