If you mix up a bunch of your own glues, paints, finishes, lubrications, solvents, etc., consider creating a small formulary to keep the recipes for the mixes you use. Such a book is also a great place to keep any measurements, weights, temperatures, formulas, and other notes that you might use on a regular basis. I keep those in the back. For my books, I use blank-page Moleskine Cahiers notebooks
. I use twine to create a loop so that I can hang them from my pegboards.