One of the wheel valve caps seems to have gone walking, so I searched the ebays to see how expensive a single replacement would be... All the top results are glow-in-the-dark ones, and honestly, why not?
GREASE NIPPLES!
THERE IS A LISTING THAT CALLS THESE THINGS GREASE NIPPLES!
#GreaseNipples
@billgoats what were you searching for to find that listing?
@gpowerf “tyre nozzle cover”