What you'll need:
Cereal box or other cardboard for backing
Binder clips or rubber bands
Step 1: Cut your paper and backing
I chose to make mostly 5.5" x 8.5" and 5.5" x 4.25" notepads. I also made one 4" by 2.5" mini notepad.
You can also leave the paper uncut if you prefer a full size scratch pad.