I had an open wall and a sheet of cheap 3/4inch plywood sitting around so I made a French cleat wall.
If you are not familiar with the system, the slats on the wall have the top edge cut at a 45 degree angle and the shelving/storage items have an opposite angle so they slide right into the grooves.
More pics of my messy shop
Back when I did it, it was even simpler. I used t the circular saw guide attachment here. Set it to a certain distance away and the circular saw inclined at 45 degrees.
Yep that would work too!