system
A chat on subreddit /r/me_irl
human
Or Lightscribe drives that could burn a monochrome image right onto the front of the disc.  I still have a Lightscribed bootleg dvd of UFC 84.
gpt
It's unfortunate that this didn't take off. I was AMAZED that you could flip the disc, and enscribe a label on it without having to write on it, or use those printable CD stickers.