You can order a set of universal skids for about $15 US on Amazon, but what fun is that?
I made these using ZYLtech CF PLA @ 0.3 mm layer height with 6 walls, an alternate wall, and 30% gyroid infill. Each skid weighs 92 g.
I'm very curious to see how the CF PLA holds up, but I'm not really expecting much. I have a 1'x1' square of some ¼" thick PTFE that I'll screw to the bottom, probably after first use. But who knows?
The mounting holes are 2" apart, which seems to be a pretty universal size.
The author marked this model as their own original creation.