“I take a picture and put it through an app called Line Camera, which has a million different filters and acts like Photoshop so you can play with brightness, color, get rid of dark circles, etc.
Then I put the picture through another—Squaready—which makes pictures smaller to fit Instagram better.
Finally, I open it in Instagram. My favorite filters there: Valencia and Hefe.
Or: iSnapx ($29, givesimple.com), a wireless device and app that lets you take pictures hands-free with a shutter control remote and camera stand."