The Rocketbook is a lineup of erasable notebooks made to be reusable for years and then some. I bought one a few days ago and now use it for most note-taking, so here's a short introduction.
The story goes as follows: co-founder of Rocketbook Joe Lemay forgets to pack the correct notebook for an important sales meeting at Salesforce. Looking for a solution to this problem he tried out electronic pens and smart notebooks, but it doesn't feel quite right. So he creates something that does feel right. A few products and crowdfundings later, we now have the Rocketbook Everlast:
It is really a notebook of this day and age: made of synthetic paper, the pages can be erased. Coupled with the Rocketbook app, I can save a scan of my notes on my phone before erasing a page. The fact that it doesn't force you to send your pages to the cloud is a plus, but you don't really have to use their app. I personally use an app called Notebook to scan my pages, then send them to Nextcloud so I can correctly categorize the files on my computer later.
Writing on the Rocketbook feels very different from writing on paper. The pages don't have any granularity and my pen just slides over them. It takes a bit of time to get used to, but otherwise writes just as well. It's also worth noting that erasing using the FriXion eraser doesn't seem to work well. You have to erase using a damp cloth. While we're at the disadvantages, the front and back cover seem to scratch very easily. After handling the notebook for a few minutes the covers already had deep scratches in them. Although annoying, I wouldn't call this a deal breaker.
The Rocketbook Everlast is just one of the available notebook formats: it also exists in a smaller size, as well as with different page style combinations. Something to please everybody :)
All-in-all, after using it for a few hours, I'm already a customer for life.