This is a great little book for phone numbers and other random notes. You can make it any size you like, and the paper never had to go to the processing plant! Using a string binding instead of glue is easier on the environment, too. Some of the books I've made are for sale at my Etsy shop.
Recycled paper (blank on one side)
Thicker recycled material (postcards, envelopes, cardboard, etc.) for covers
Twine, yarn, or other string
Awl, drill, or drill press
Large sewing needle or bookbinding needle
Paper cutter, scissors, or utility knife