Mini Lathe Chuck / Tailstock Key Corner Holder Mount
Fits tightly in the corner of splash guard.
One version is just for the lathe chuck key and the other also holds the tailstock chuck key.
I added a version with holes for permanent or more stable mounting. you can drill the splashguard and put a 3mm bolt thru it or you can use a 4mm and thread it in as a set screw and just clamp it on.