I’ve never really tried to customize the back of my iPhone, since I use cases, but if you use a pouch or have your iPhone naked, then this back cover has got some interesting design elements that might catch your eye by dressing your iPhone in a little black lacy thing.
The Lace iPhone cover was designed by textile artist Anne Marie Jackson, and it’s a thin, but durable wood back cover for the iPhone 4, 4S, and 5. The case features a laser-embossed lace texture that’s been finished with in black to make it stand out from the woodgrain underneath. You just peel and stick it on the back. It’s supposed to be easy to remove without leaving any residue or damage. It’s also designed to work with the Apple bumper. I guess that together these act like a full-on case.
The Lace back cover is available from LazerWood for $30(USD), including a free screen protector.