Nothing was more infuriating than being in a lab with an empty printer and no paper to reload it with. All night long, the system that printer was connected to would complain, in a snotty female British accent, "Your printer is out of paper."
One of my long-running, low-priority projects has been to find a way to get those sound files off an old NeXTSTEP 3 install CD I swiped out of the DCL NeXT lab many years ago. (The labs had all been upgraded, and each license included a media pack. There were literally hundreds of them stacked in the lab. Who would miss one?) For the record,
mount -t ufs -o ro,ufstype=nextstep-cd /dev/scd1 /cdromis your friend.
I've stashed all the sound files I could read over here. Notable collections are the system beeps and the English printer errors. The printer errors in other languages are present. Some play in my version of sox, some do not. These are still in the original NeXT .snd format. Sometime I'll convert them to .aiff, but I don't have time right now. :-)