Rocketbook makes an erasable, reusable notebook that allows for easy, quick scanning with an app. Using formulas found at the bottom of each page, the app can send pages in bundles as PDFs, JPGs, etc. to cloud storage or emails. It can even make written text searchable with OCR. I’ve found the features so useful, it’s hard to write with anything else. Plus, I like the reusable factor of the notebooks.