Hi Skyblast
It really is pretty easy to build a cp that just "plugs in" now. esp if you center in on USB driven controllers.
They're all out there. Key encoders, trackballs, sticks, spinners, they'll all just plug into 1 (or more) chained USB hubs, then plug the single "mother" hub into your pc. That's how my CP works and it's a 4 player, with 2 trackballs, a spinner and a flightstick.
But I saw you mention leather work. Any ideas on where I might find a tooling wheel to emboss a border pattern? Something like you might see on a custom leather top desk?
I'm trying to work something out for the cab I've been working on....