A lot of apps will let you turn your iPhone into a scanner, but Scantilly lets you turn your snapshots into PDFs quickly and easily. All you do is take a picture of the thing you want to preserve, crop it down using a very simple tool, and then you can e-mail it to whomever you want. You can even add extra pages with a single tap, which is pretty handy if you have things to scan other than crudely drawn cartoons of dubious quality.
Not that I know anything about that.