We don't tend to associate words like "scanning," "PDFs" and "documents" with fun. After playing with Handy Scanner, though... well, we still don't. Sorry. That headline was a lie. Scanning documents is, however, a breeze with this freemium app. Breezy enough that you won't want to go Office Space on your scanner, and that's fun.
Handy Scanner is very straightforward. Take a picture of a document that you want scanned.