Perfect studio-like lighting at your hands. Not only does it enhance the lighting quality in your pictures, it makes everything in your camera lens 10 times clearer which is what I love. It runs on 2 AAA batteries and can be used on any thin device and it just needs clipping on. It also has 3 levels of brightness which you can adjust to your preference. 
WHERE TO PURCHASE
Amazon (click here) - shop with Amazon Prime for same day or next day delivery
eBay (click here) - slightly cheaper than Amazon
OTHER LIGHTING DEVICES
LUMEE iPhone Light Up Case (click here)