If you are a torrent user, you may find a lot of fun things on the tracker Cathode-Ray Tube.
It’s sole purpose is media that is 20+ years old, and it’s basically a tiny version of MySpleen - lots of old, rare, obscure, and (a recent increase in) foreign titles. They also have a LOT of WOC content - TV recorded with original commercials, which is my favorite part of it.
Less-so on magazines and print, although there is some of that on there.
I have a 250GB external Seagate that is nearing 20 years old. Even made it through a house fire. Still works just fine.