The signs of a good mechanic: A place for everything, and everything in it's place. And of course, many thousands of dollars invested in Snap-On
Use a pool noodle to hold paint brushes.
This magnetic wrist band and clip-on pouch keeps nails, screws, fasteners, wrenches and small tools at hand while you work. No more holding nails in your mouth! Makes assembling modular furniture so much easier!
Home Made tool organizers... Pliers and Screw Drivers - The Garage Journal Board
Letter out of wrenches. Could also do it in reverse, make the letter of the tools instead of in relief.
Mechanics Time Savers MWH14SR Magnetic Wrench Holder, SAE