This lens set comes with several handy lenses for your iPhone 5. In the pack, there's an 180-degree Fisheye lens, a wide angle lens, and various telephoto lenses in 2X, 9X, and 12X variants. USBFever claims that these lenses can turn your iPhone into a professional DSLR camera.
Joby GripTight GorillaPod Stand ($16.74)
Sometimes, you need a better way to hold your camera. That's when tripod and camera mounts prove useful. The Joby GripTight GorillaPod Stand provides a flexible anchor for your phone that Joby says will stick to nearly any surface. It works with any smartphone, regardless of which model you have.
Lensbaby Sweet Spot Lens ($70, coming soon)
In May, Lensbaby raised more than $40,000 on Kickstarter to create an attachable lens for smartphones that lets you choose the area of focus. With the Sweet Spot, you can focus on one point in your image while the outer edges gradually get blurry. Lensbaby, which makes an array of lenses, says this is its most popular effect to date. It'll cost $70 when it comes to market, but Kickstarter backers get it for $50.