I got a bullet journal yesterday from Walmart to try it out. No idea there were so many variations! Got two—a small one that fit it outer pocket of purse so it goes with me (seemed to suit my lifestyle better) and a larger one which seems to be what the majority were—and nicer than the small one with more features but maybe too big—but for 2 bucks on clearance I took it home.
Actually eons ago I had a very similar system. I should’ve written a book it appears. They stopped making the tiny binders I used at the time so it fell apart when my binder did.