Just when you thought that every possible way of calibrating your printer had been created, an entirely novel and unique method arrives!
This isn't it, though. This claims to be neither novel nor unique, and is instead a cover version of  MICRO All In One 3D printer test
This test print is designed to be fast and small, particularly focussed on the tests that are useful for tuning new filament parameters (temperatures and cooling):
Overhangs
Bridging
Stringing
Retraction
Approved for use by Black MESA Engineers:

"This print makes filament come out of my nozzle!" - Tom

Print head: MGN9   : https://1drv.ms/u/s!AkTq2jZffWF0gocIZ0YqGtX8OvyDdA?e=YjHCbwMGN12: https://1drv.ms/u/s!AkTq2jZffWF0gocHA1UDNuqZVW17xw?e=bMpzOB-Printer: V...