A similar vein as this, at work I was talking about a heat gun:

“Look, the feet are molded into the cable so if you break it you have to buy theirs!”

I then pull the cable out to show it as an example and snap

I didn’t realize it had a retention clip at all, so I lightly pulled it and snapped the thin plastic holding it in. I thought it was held in by friction.

Oops.