
Since I am trying to make my gradebook more BuJo friendly I know I will be using more pages in my gradebook this year.  I also really want to adapt my book so that I can keep everything in one place.  To keep all of the papers I need to grade, I wanted to make folders.  It was important that they were sturdy, because they will inevitably get a beating during the year, but I also needed them to be flexible. 
I found a video that involved punching holes down the side so it could be put in and taken out of a spiral notebook.  The tutorial is 
here.
Granted, I probably should have been actually grading papers rather than punching all those holes, but now I have a great spot for all those papers to go.  Worth it!