Being an absent-minded hoarder, I constantly find treasures I'd forgotten I had. And have probably replaced twice or more.
Not too long ago I needed a Williams bezel for a robotron/joust cab I was restoring, and I found a joust bezel and marquee in my stash that I wasn't aware I had collected. Saved me a lot of time, money, and shipping concerns.
I can still feel the pinched palms from the poorly setup trackball from the one at Shakey's Pizza in Point Place Ohio. I'd love to play it again and see if it's really as hard as I recall as a little kid.