Now that I've attached some pegboard to the sides of my printer, I want to store everything on it! Most steel-sheet holders have design decisions that I disagree with, so I started from scratch and made a new one!
This is a work in progress, but I wanted to publish it in time for the Design Contest!
Some aspects I wanted to fix were:

The file is parametric, so you can change how many sheets it has slots for! I've included 2,3,4,5,6 sheet varieties in the downloads, However, if you want more, you just have to change the “NumberOfSheets” parameter in Fusion 360. I figured I wouldn't include a single-sheet model because it's always nice to have an extra slot when swapping between two. (It also breaks my model currently)
This model utilizes the phenomenal T-Nuts for Skadis created by @6d6178. They are an incredible way to securely attach things to Skadis pegboard, and they were a treat to design around. You must download and print two of them for this model.
If you have access to both sides of your pegboard and have M3 fasteners, there is another option. I'll also include a remix that uses a simple M3 screw and nut, but you'll have to be able to reach the back of the skadis to use this one.
Finally, I want people to be able to remix this design to suit their needs, so you can find the most up-to-date Fusion 360 file here.
After printing V1, I have some complaints that I need to address before recommending this model.
V1 is working for now, but I'm going to re-build this from the ground up to solve these problems.
The author remixed this model.