I use a logbook for tracking work, for taking notes, and for making lists. This is for scribbling, so it's not a thing of beauty, although I have borrowed a few habits from the bullet journalling people. (Notably I number all the pages and make a little index at the front for content I want to find again.)
I also cover the books in pretty paper - I think I did this with the first work book 15 years ago because I kept on misplacing it and I find it easier to track brightly coloured things. Also it looks so nice.
I'm very fussy about the notebooks I use. They must be hardback, plain pages with no lines, and decent quality smooth paper. I'm currently using the
Oxford Black & Red A4 notebooks and will probably stay with them for the rest of my life or until they stop making them. The only downside is that the Oxford notebooks have inspirational quotes on the inside covers (e.g. 'The secret of getting ahead is getting started') which really do not inspire me to do anything more than grind my teeth.
So when I start a new log book I:
- carefully scissor out the pages with inspirational quotes,
- cover the inside cover with white paper (to hide more inspirational quotes),
- number all the pages,
- cover the notebook in coloured paper.
Then it's good to go.

Four A4 logbooks, for the years 2022 - 2024.
Covered (left to right) in cream paper with cacti, paper with slices of watermelon, bright blue paper, and green paper.