Dude I can’t get this question out of my head!
I wonder if you could use these locking quick disconnect keychains–I think you can find them in a whole bunch of different metals:
Also, if you’re looking for hardware in any material you can imagine, check out mcmaster.com.
I’ve spent some time considering various actual electrical connectors, but…I don’t think they fit your mission.
Good luck man–please let us know what you come up with.
100% do this.
https://store.ui.com/us/en/products/nanobeam-5ac
I fought this battle at every price point and the nanobeams are absolutely the way to go. Extremely easy and reliable.
I wish I’d started with them!