One of the iPhone's few weak spots is its camera: fixed-focus, just 2-megapixels and no flash. But that's where the Snapture gizmo comes in.
It's a case-like sleeve for the iPhone 3G that incorporates a real--if slightly diminutive--xenon flash bulb that should enhance the iPhone photography experience pretty significantly. It even includes a red-eye reduction system. Though it draws power directly from the iPhone itself, according to makers SnaptureLabs that isn't going to make too much of an impact on your battery life: up to 1,000 flashes would be needed to drain the cells totally. The case bottom also incorporates a speaker amplification system too.
The system's one drawback, apart from it's not overly-attractive looks, is that currently you'll have to jailbreak your iPhone to get it to work. There's no data on shipping or pricing yet.