On her site, Donna Downey offers a free video download on how to make newspaper book pages for your handmade art journals.
It's really a fun technique. Basically, you take ten, cut sheets of newspaper and stick them together with a glue stick. For good adhesion, run a brayer over the papers. Then you cover both sides of your paper with acrylic paint. You can see one of the sheets that I made above.
I have some old Trader Joe and Whole Foods circulars that would work with this technique too. For complete details, check out Donna's video and recycle some of your Sunday newspapers.