The NeXT printer also had no power buttons or other controls. It was driven entirely by the computer, powering up when needed. I always liked the voice alerts

The NeXT printer also had no power buttons or other controls. It was driven entirely by the computer, powering up when needed. I always liked the voice alerts for printer issues. Recorded people speaking various messages. For English, it was a woman with a British accent saying things like "Your printer is out of paper." Other languages each had their own set of recordings.