Using notebooks in the field or darkroom I find my self only writing down the technical details faithfully. Over the years I have been more inclined to try and express the emotions or thoughts during the taking/making of my images. I'm not doing a very good job of it and it becomes difficult to find my technical details when mixed with other thoughts or to search those thoughts when embedded with technical details.
At the store in the office section, I came across a 6"x9" Steno pad with lined rows and 2 columns. I labeled the left side Technical and the other column Thoughts.
I tried it out in the darkroom with some new prints and wrote down the technical details for a given print. On the Thoughts side I wrote down some random thoughts about the images. I almost needed a third column for Ideas spawned while thinking about the images such as How to improve next time, what to explore or try to express. Then I remembered there is the back of the page. The back side is now labeled Techniques to try and Questions (to ask myself).
The last two pages of the pad are my LF checklist, Shutter variances, and a growing techniques list (use intentional blur, Hyperfocal focusing, etc)
This is a very useful tool for reference. Pen and paper - who knew? I suppose I could transfer it all to a database or spreadsheet for search-ability.