Reading about RIAA equalization and vinyl disks made me remember about this video i watched some time ago.
I hope the automatic subtitles are good enough. He made a LP disk..out of chocolate, engraving it on his own and applying that RIAA equalization first. Being able to hear something out of the noise is quite cool
 https://www.youtube.com/watch?v=D0RpLxIYX8Q

There's also a more recent one using laser engraver on wood instead of chocolate