I have found my rocketbook[0] extremely useful for the task. Its almost as good as real paper and you can find the pens anywhere. Only issue is once you scan it you can't edit it.
I bought one for my wife that can be heated in the microwave to "reset" it. A pretty nice gimmick for someone that still write in paper.
Along with Rocketbook notebooks, you can also look into "stone paper" products which offer similar usability but without the scanning tool/app that Rocketbook provides.