Small Sander Holder - multiboard

I've seen this little rectangle sander around, I'm not sure who makes it or where I got it from. I designed this to store the sander and a nice set of papers, I didnt make the holder for ALL of the paper options as I didnt want it to be way too big so I just went with what I typically use - 60,100,120,150,320, and 400 though I usually store some 80s, 180s, and 240s on top of those. Anyhow, made this so they weren't going all over the place.