A few folks have talked about digitizing paper documents, so one of my favorite tricks for iPhone havers:

iPhones have very nice scanning tools built in, but it’s buried in the Notes app. Create a new note, click the camera icon, then “scan documents” and it will create a very nice, usually well cropped and OCRd scan that’s saved as a PDF you can then export elsewhere. Wish it was a standalone app because it works so well, and this is from someone who helps digitize and preserve paper documents for a living.