This is an awesome article on from Doug Brown who, after 27 years, finally exposed how to access a Easter Egg in the ROM of the Beige Powermac G3 that displays a composite photo if the team that developed the system’s architecture:
https://www.downtowndougbrown.com/2025/06/finding-a-27-year-old-easter-egg-in-the-power-mac-g3-rom/
Team lead Bill Saperstein even left a comment on the post revealing the somewhat “skunk works” development program.