Folks it doesn't get much easier than this when it comes to upcycling ruined books! Ingredients:
Beaten up board book
Scissors or Exacto knife
Cut out page and cut it into as many pieces as you want.
I'm making a whole bunch of these for toddler busy bags! The double sided effect makes it both more challenging and two puzzles in one. The kids love them... (even my 11 year old got caught doing these puzzles!)