I'm currently using Camscanner to copy a book that will be sent to Google Drive, after I edit some of the errors in it, where I will log in with my computer, use an epub software to complete the conversion, and upload it to replace my worn hard copy with its electronic version.
I file my work paperwork via Transflo Mobile+, which also has a chat feature that my employers have started using as an alternate communication source if our computer systems/communication are undergoing maintenance or a downtime event. I can send pictures of a breakdown type to them with written or edited notations to enhance the problem using the S-Pen.
Had my first video chat with one of my grandsons the other day. He wanted to 'talk' to paw-paw.
I've scanned pictures to upload and share with friends I've not seen in almost 30 years.
I've been transferring a lot of hard paper to electronic form. All documents are scanned to Drive and backed up to One Note or Dropbox. Neat tip, take a good image of your driver's license and store it to drive. That way you have it in case you lose your ID and need to show it. A customer forgot to return mine a while back, and an officer that pulled me in for a random paperwork inspection wanted to see it, and when I explained I was on my way home to pick it up to where the customer had sent it, he accepted my electronic copy without issue.
My kids' documents are all saved electronically, and I can share them if needed. They all have access links to their document "vaults".
I have a file with images, serial numbers, and information for all our valuables for insurance purposes. The quality camera provides remarkable documentation for proof of ownership.
I keep vehicle records on Evernote. Links to interesting stuff. I write down lyrics or book ideas on it. Keep track of my DVD collection. Chat with friends. Play.
The Note 5 has become even more important to me than my other phones were, and that's saying something, as I've been progressively going to more and more electronic usage. The tools in the phone make it suit my needs, and I'm discovering new uses almost daily.