Since the iPhone's introduction, people have been using the built-in camera for more than quick snapshots. Some have taken macro shots, used it as a webcam or even created high art (OK, so that last one was a bug).
Another popular practice is to use it to generate to-do lists and even as a scanner. People have taken photos of things they need to buy or remember to do. Others have sent snapshots of business cards, receipts, etc. into applications like iPhoto and Evernote.
That's clever, but getting a legible image of your documents is difficult. Enter the iPhone Document Scanner. This device positions the iPhone and document to be "scanned" at the perfect distance and ensures a steady hand. If you're a Ponko member, you can download a free .eps file of the plans to build your own.
We knew Apple put the camera on the back for a reason!
Thanks, Baptiste!