I'm on mobile right now, so apologies that there are no links. I have an app on my phone called TinyScan, which allows you to take a photo of a piece of paper and do perspective correction on it to get a normal rectangular copy. I'll take a stack of notes on a particular topic, scan it with TinyScan, and then upload the resulting PDF to Evernote. Then, I'll sprinkle some keywords into the Evernote doc/tag it/move it to the appropriate notebook so that I can find it later. Not ideal, but it's been working pretty well so far.