This weekend, I ordered a Dupont crimper tool and a Dupont Connector Kit. I did not realize that these connectors were called Dupont connectors until trying to avoid buying 2.54mm housings from fishy Chinese sites...and found what I was looking for on Amazon.
Next step is to see how easy it is to hack different connector male pins into one of the Dupont housings. This connector seems hopeful: TE Connectivity AMP Connectors 2-173983-2. The datasheet show a 0.9mm body that might have some spring to it. Can it be hacked? I'm doing some more searching on DIgikey to see if there are other connectors that having something like it before ordering to try to keep shipping costs down.
That is all for now.