Pattern paper (to cover the chipboard and the binder clip)
I am not giving measurements, because you can really make this any size depending on what size note pad you get.
1st-corner round the chipboard and the pattern paper. Then glue together. I used tombow adhesive to attach mine (holds up well)
Disassemble your note pad. For this spiral kind just un-hook the ends of the spiral and twist it out. I go to the left and it seems to be just a little more smooth coming out.
(you can always just rip all the pages out. I just don't like the mess it makes)
One of these spirals will make 3 mini clipboards.