Jessica: The Sparx case takes advantage of flashing LED lights already built into the iPhone 5.
Get a notification or a call on your phone, and the case lights up.
The LED is not as glaring as a camera flash but it can be seen no matter how you set your iPhone, face-up or facedown.
Sparx comes in several different colors and designs, and is still in the testing phase. But the company behind it says they hope to get a thousand cases on the market in its initial run.