If you have ideas or requests, send them and i can try to make it if it fits my knowledge level in Blender.

Trying to make some different Objective markers.
All printed with Sunlus Meta PLA and with a 0.4 nozzle on 0.08mm layers and adaptive.

Did some sloppy painting to showcase how the prints look like.

Added pictures from Blender and when they were primed. 

Priming showcases defects easier.

The models are pretty easy to sand down the layerlines if wanted.