Homebrew Skills

We have Homebrew races and classes. Now we just need Homebrew skills. The default Fantasy 5e skills doesn't always translate into other settings. Modern and Future settings for example require things like Repair, Technician, Piloting, etc etc. I'd like the ability to define and adjust my skill names and what Ability is associated with it on the fly in any game but and to also define skills in any base world I own or clone.