Where can I obtain some of these, preferably pigtails (or even just the ends): Female DC Power Supply Plug to PC Case Fan Power Adapter Cable
So it's a standard Molex thing and their website links out to the exact item at a handful of vendors. 19 cents each instead of the 7 bucks at NewEgg. 🎉
https://www.molex.com/en-us/products/part-detail/2078410003
Amazon, if not, find specialty stores/companies (Granger type). That's what I'd do.
@YouInMyEye Good tip, thanks. I quite like Grainger. They're good and also apparently serious about sustainability. https://www.graingeresg.com/
@b4cks4w Directron (if they're still around) or newegg possibly.
@b4cks4w monoprice dot com
"aliexpress" is not an acceptable answer