Guessing most people won't care about this, but works well for me, and thought I would share.

When packing the no-show socks it isn't easy to keep them in pairs, and the cardboard that comes with these type of socks don't hold up long. Made some in PLA and stores in drawer/suitcase perfectly. I put two pairs on each holder.  

I traced the cardboard one and sized it similar.  Sized for 10-12, so scale as needed for different sizes.