My final design has a back board to protect the wall from shoe marks and direct, but you could mount these directly to the wall if you choose.
Step 1: Step One Grab some Wood And Mark it
I found some scrap wood that was 7" tall and ???" long, (There just so happened to be a lot of 7" tall pieces of wood laying around.
I then measured in 2" and marked up 22.5 Degrees.
I then marked the rest of the wood 6 more times accordingly, or you can make your first cut and use that piece as a template for the rest.
Step 2: Saw Cut Saw
Once you make the first cut you can stack them and make multiple layered cuts at the same time.
Center the Saw back to Zero for Straight lines and back to 22.5 if needed.
Step 3: Got Wood?
Lay out the angled pieces on your back board.
The backboard I grabbed was 17 & 1/4 inches and the angled pieces are 3/4 of an inch thick, so I ended up cutting my longer pieces to 15 & 3/4 inches.
I found more scrap wood that was 3" tall by ???" long. So I cut 3x 15 & 3/4 inch pieces.
If you want to add a base to each holder for smaller items, sandels, magazines, etc. then cut some 2" pieces into 15 & 3/4" as well.