3d printed parts

I've bought 3D printed replacement cogs for my Onkyo turntables in the past. Now I'm contemplating how to 3D print some backgrounds for signal strength meters. I'm curious what the rest of you are doing. Are you using 3D parts of any kind? If so, did you buy the parts pre-printed from someone...

Posted in another thread but just gauging interest in a set of drop in replacement terminals for the MX-1000 that use the original terminal posts and can be replaced one at a time instead of the whole set. With this replacement the unit still looks almost factory.