For a workshop that is literally paneled with peg-board, one may wonder why I want more. But, you see, the cabinets cover some of it... Also, since I paneled it in 2012, I've had random scraps of peg-board hanging around, taking up storage space.
Anyway, I thought the side of the cabinet would be a good place to store new sand paper, and was contemplating the best way to attach hooks, when this peg-board solution suggested itself

Building and installing it, and the making holders for the boxes of sandpaper, was the productive part of my day.
Gives me an idea for the next project: I wonder if I can fit our battery operated drills (Dewalt and Ryobi) battery chargers and batteries on the other side of the cabinet? That would really get them out of the way, and give us more room for other things in the shop.
Tom