If you really want to achieve a retro vibe, how about going back to the lowly pen and paper? Fortunately, if art isn't your strong point, Jonathan Cresswell, the brains behind (and a personal friend of yours truly), will do it for you. Simply take a photo, then share it on Twitter with the hashtag #Instickgram, and Jon will get back to you with a stick figure version of your image. It's then added to a delightful gallery of stick imagery.

Given all the hype that 3D TV has gotten, it isn't surprising that somebody tried to somehow incorporate it into photos. does just that. Take a photo, and choose from a variety of different 3D effects to give your snapshot some quirky new dimensions. The results get saved to your camera roll, but you can also share them on the likes of Facebook and Twitter.

Sorry, Android users--this one is only for iOS. It's available from App Store, and it costs $1. If you have an Android phone, though, on the Google Play store might be worth a try.