use two shelves from one of those wire shelving units and zip tie empty thread spools in all four corners and the middle. Awesome idea for wall storage! I have a ton of empty thread spools I've been trying to think what to do with!
Ayla would love to have one of these for her crayons/ colored pencils/ markers. I'm thinking with colored cups that she can paint herself :) Use a wine rack and large cups to store markers, colored pencils. for paint markers and such.
Creating cubbies for your junk means everything will look tidy even when items wind up out of place. Choose matching bins from an office supply store, or puzzle together bottoms of cereal or pasta boxes to DIY a customized system.