Aside from some video games and TV, most of my childhood memories revolve around the things I did with my friends, mostly RPGs we created and random shit. I also had a weird interest in recording things with a tape recorder. I even still have these recordings today with next to no degradation! When I've got nothing constructive to do I convert these recordings, or at least those I care about, in MP3. And I'll find a way to archive them eventually.
A few years later I could realize my childhood dream and get a camera. All those VHS-C tapes are now treasures waiting to be converted to MP4s. I also still have my YouTube videos I had on my 1st account. The earliest ones are already approaching 10 years old!