When playing around with Capacitive touch a while back I had this idea...

If your button is low profile enough and/or has a shield connector... you can make you button a capacitive touch button.... and a button. I know, there's a lot to take in there. But regardless, this silly line of thinking didn't justify looking at my computer let alone firing up KiCAD. So I pulled SharpieCAD out of my pocket.

Black on...

Copper off.

It even worked!