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
I have been planning (but not yet implemented) a wall for my workbench area. I’m hoping to make holders for my most used tools and a few of the larger pieces that don’t fit in the cupboards.