ReNotes is the name of my DIY project dedicated to upcycling various paper waste into notebooks… There’s a lot of things that can be done; they’re always few clean sheets in old exercise books, all kinds of magazines is a good source of illustrations for application, packaging paper and paper bags for covers wrapping, etc.
The sheets I used for the covers of these notebooks are real photos laminated in plastic. Back in USSR photocopies with different formulas like these were used for cheating on exams or tests or just like a useful thing. Upcycled metal clips from paper folders allow to add or remove new sheets quickly.