Looking at your workshop pics I just had an idea, you could use one of those magnetic knife holders for kitchen knives, fasten it to the wall and voila - instant tool holder.
I have them in the kitchen and they are super handy, easy to take the knife and easy to place back. They should come cheap, I think you can even find them in Chinese goods stores.
They would work only on metal tools, not so sure how it would work with awls and such.