The main structure for this organizer is pretty simple; you just need a couple 1x3 boards, a decorative aluminum screen, wood screws and stain.
The screen will be the most expensive part, and price varies depending on pattern and size. The piece I used was leftover from another project, but brand new was $16 for a 24”x36” sheet in a Union Jack pattern.
You will also need picture hanging hardware if you want to hang it on the wall, S hooks and cup hooks, and if you have one, a staple gun with staples 1/2” or less (this is the easiest way to fasten the screen to the wood, but you can also use screws). If you are trimming the screen to a different size you will also need tin snips.