Broken Salt/Pepper Grinder (Saint Thomas Ward EX2)

This is more of a "just in case", before I throw this away. The little metal knob on the top that allows you to adjust the fineness of the grind and that you unscrew to refill the grinder has snapped off (the photos with it attached are with it just balancing on the top, to show how it's meant to go). These are a pretty common, popular design so I thought I'd check that no one had a use for it as spare parts before I bin it. Or maybe someone could use it as an art project. It could even be repaired by sticking/soldering the knob back on but it's probably not worth it unless you like tinkering and fixing things!