My grandfather is a dental technician. Don't freak out just yet; it means he had always had easy access to resins.
That means he could make these:
Resin and ink shank buttons he made for my mom years and years ago. I don't understand the details of working with resin, but it basically sounds like something very easy (if you know how to work with resin) with very impressive results.
They were originally not attached to this bright blue jacket. The buttons that came with it looked like this:
I pronounce my grandfather's buttons a big improvement.
(Bright and shiny and cool against a very shabby backdrop.)