I just found this site today that has notebooking pages to correspond to each chapter of Story of the World! And, best of all, it's free! I've printed a couple of notebooking pages already but one caveat, there is a header and footer so check your print preview. I'm still going to have to trim the page since there is a header that I can't remove but I'm o.k. with that. These can be mounted on cardstock and will look very nice.
Keep calm and homeschool on.