For iPhone 3Gs and 3G users, or even Edge iPhone users, this new iFlash dongle plugs into the 30-pin connector on the bottom of the handset and provides an LED flash light for those night time shots. There is an on/off switch and it boasts a 10cd to 13cd brightness intensity. For those of you with an iPhone 4 this could add some extra punch to your night time shots. It also doubles as a flash light.
You can grab one for $40.