I'll pass along this much.
Once it's up and organized, decide on a coloring scheme for sizes of wrenches you use the most. For me it's white for 10mm, light blue 12mm, yellow 13, dark blue 14, red 17, green 19, black 21, etc etc.
Dab or paint or colored electrical tape on handles of tools. Then put a matching dab / strip on its spot on the wall, or in the drawer, etc.
This makes it super easy to spot the tool you need from under the car etc and makes it really fast to find its spot to put back on the wall. It also makes it clear which one it is that is missing.