After I had printed the NASA space wrench in PETG, I realized that the wrench is actually tougher than I thought. I put a metal socket on it and it felt like it could really be able to tighten some screws.
Since I needed something to practice my FreeCAD skills on, I decided to copy the metal socket and print it out in PETG. The results are very pleasing in my take. The only downside that I found out after printing is that my arbitrarily chosen 12mm wrench size is not very common. So I will probably adapt the design in the future to something more common, e.g. 10mm or 13mm.
Prusament PETG PETG
Print time 47minutes on Prusa i3MK3S in normal mode.