Business Gel Cards :)

Dissatisfied with the way your smartphone photographs are turning out when the built-in flash is fired? When desperate times call for desperate measures, you can make your flash match the ambient light around you with the help of a colored gel. The flash is often just a tiny LED, though, so how do you comfortably “mount” the gel to your smartphone?

Better yet, you could do the same thing with two business cards in order to have a portable accessory you can carry around in your wallet!