TagMyDoc is a nice way to share documents without having to email or print. TagMyDoc is FREE but you can chose to upgrade if you wish. For what I use it for the free version works just fine. Basically, TagMyDoc places a little QR code on whatever it is you want to share. Each person that wants that document can scan it and it will be downloaded to your device. I can see great possibilities in a classroom with a 1:1 or BYOD program. This way an educator prints out one sheet of paper, tags it, and then sends one sheet around the room to be scanned by the students. You can even connect TagMyDoc to your Box, Google Drive, or Dropbox.
An overview about TagMyDoc is embedded below.