Of course, no worries. I seemed to recall there was something out there for this because I read some article a while back that was discussing the scope-creep in systemd, and the problems that result from it. I think I found this wiki originally at that time.
This makes me curious as to what proposals there have been for a universal save icon otherwise.
Saving data is a fairly abstract concept if you have no knowledge about computers. I have a difficult time thinking of something that someone who has never interacted with a computer could look at and come to an intuitive conclusion that the symbol means to save.