Just a tip: there are 4 main kinds of notebooks - lined, dotted, gridded, and blank. I only linked dotted notebooks above, but those brands also made other notebooks so they shouldn’t be too hard to find.
lined notebooks are good for when your bujo is writing-heavy (so if it’s also functioning as a journal).
dotted notebooks are probably what you see most often because they’re so versatile. they’re great for both writing and more doodle heavy bujos (but if you have trouble writing in a straight line they probably aren’t for you).
gridded notebooks are great if your a perfectionist because they make it super easy to draw straight lines.
blank notebooks are what you want to use if your bujo will be very art focused.
these are just some pens that are popular in the studyblr community, but you can literally use any pen (or pencil) that you want. any pens that you already have in you house are fine, so please don’t go out and buy any of these just for your bujo!
EXTRA: you can check my supplies tag and there should be some swatches like this