Similarly USB cables that do not carry data lines

I think I disagree. I just (re-)discovered a couple of my cables don't have data lines a few hours ago, prompted by the earlier discussion. My initial instinct was also to throw them away like you said. But then I realized they're actually quite useful for any case where you want to prevent data transmission, whether due to security or other reasons.

agree. i have no issue with charging only cables, they’re often lighter and more flexible, but i do require the 56k ohm resistor to wrangle misbehaving devices that could start a fire.

Though these should be cut in half before discarding so that no one "helpfully" retrieves them.

The USB-A half is helpful sometimes. I’ve soldered mine to a barrel plug and I’m using it to power various 5V devices now.

How do you test that?