Hey, Raz, that's a nice-looking holder!
Here's Peanut's: I think ours is original and quite simple. The door has a molded-in inset and three wooden slats attached across it. We use it for various things. Yours has many options that sound like great ideas.
Double-click on the photo to enlarge it.
2nd hand stores often have little carrying cases, bags, pouches, etc, and wooden items like magazine racks for sale
cheap--so do yard sales, etc.
GabeB: Welcome...at one point I'd certainly have gotten some upholstery fabric and made one to suit...show us a pic of what you come up with when you do, will you?