I like playing around with lightpainting ever since I started photography because the possibilities were endless! One night I wanted to challenge myself to lightpaint using only my gadgets, so my iphone and my ipad.
I thought of using my iPhone as my main light to highlight the subject and my iPad to use as my background. I had an app in my iPad which had some cool patterns to use as a catchlight, then I saw a pattern which I knew would look great if I used it for lightpainting.
Check out the article here: http://www.diyphotography.net/lightpainting-iphone-and-ipad/