I have been accumulating tools of all kinds for the last decade or so. Half of them are bike specific tools, and 99% of them are Park Tools.
I have started wrenching friends bikes a few years ago. The past year I have started flipping bikes and I have a reputation locally as 'the bike guy' and so I have started buying tools that I don't necessarily need for my own bike but might need to work on other bikes.
I stroll casually along the range of mental health, and one thing that drives me absolute nutters is disorder or inconsistency. I clean ever tool after use. They are arranged on the peg board by name, size and use. Park Tools drive me insane. Most of their tools have numbers and they seem to skip numbers a lot. If I have the wrenches DCW 1, 2 and 3 I have to have 4 too. But then there is the DCW 0? Gotta have it.
There are pin spanners SPA 1, and 2. And 6? What about 3-5? Isn't there a 0? Why the heelll not?
And then there are two different versions of HCW 6? Argh! Where are my meds?