I had started using the Midori MD line of notebooks about three years ago.
These are fairly minimal in terms of binding etc, but do come with a sticker you can affix to the notebook.
This sticker has space for a name (obviously?) but notable also has space for a “sequence number” and a “date range”, which lends itself well to turning this a “running notebook series”.
I recently switched over to a new one after filling up the previous one, and decided to bring them all together.
Bringing pen to paper is equal parts fun and therapeutic, and having continuity like this helps keep the habit going 🙂