Polaroid Instand camera
Sure it looks like it came from an old camera, but that's the point.
The "Hipstamatic" iPhone app turns any of your phone pictures into a 80's-looking polariods or pictures from plastic toy cameras from the past.
After you snap a picture with your phone, just swipe your finger to change the lens, flash, or film.
You can mix and match to find your favorite combination of Hipstamatic features. Plus, it has built-in Facebook and Flickr sharing, you can instantly post your page.
"I saw it on my friend's pages and thought the pictures were cool," said Raul Rojas, Raulsez.com blogger.
It's not free, but cheap. Just $1.99.