Great hack. I'm thinking that would also work for ruler storage/display. Thanks for the idea.
I also put a piece of peg board on one end to put my embroidery hoops on. When I get my cutting table done it will have peg board on both ends for my rulers, etc.
Where did you get the shelving ? Can you show us how you put this configuration together? This is awesome!
I bought it several years ago from Lowe's. Haven't seen it there for awhile. But you can buy parts from https://www.sevilleclassics.com/ look under parts and design your own. They are really easy to put together. All you need is a rubber mallet.