I'm asking for projects that I haven't yet thought of yet. Probably 20 gauge or smaller and low enough amperage that isn't going melt the wire.

XT look like they can only handle large wires. I don't see any 2-pin JST connectors.

I want something like Anderson Powerpoles, but for smaller gauge wires. Something standard that I could attach to every small device and small battery that I buy so I don't have the "wrong connector" problem.