Customizing a new system made me think of a couple of personal "traditions" I have. They give me a nice feeling of... continuity, in this madly changing world.
One is that since the very beginning of my computer use, or at least over a decade I think, I've used F1 for calling forth my main web browser. And F9 for my email app. (Which has been Eudora for almost as long.)
Another one is naming my Hard Disks with names beginning with HD: