I had an 8-track player too - my dad gave me a bunch of Black Sabbath, Pink Floyd, Creedence Clearwater Revival, Allman Brothers, the Kinks and others I can't remember. I was probably 6 years old.
We had shared vinyl, as the only record player was one of those enormous wooden and upholstered console player. So, all the records were in the cabinets near that giant player. We had a ton of music though, from blues, metal, funk, a little disco, pop, audio books, scores. It was nice. I was never yelled at for playing records - so it wasn't like a kid-free zone.
Cassettes, hmmm - I had Guns and Roses, Metallica, Slayer, Expose, The Bangles, Joan Jett, The B-52s, George Michael, Th Go-Gos, Poison, Bon Jovi, and stuff like that, when I was about 9 or 10. Most I bought at Ames or Kmart in my little childhood hometown with my allowance money
The only cassettes I kept were the ones from my teens, Misfits, Godflesh, Napalm Death, At The Gates, Danzig - all for nostalgia, really.
CDs...I think I did one of those Columbia House type club deals at like 14 years old and got a bunch all at once, including Madonna, Metallica, Creedence Clearwater Revival, Blue Oyster Cult, Def Leppard, Guns and Roses, and Black Sabbath.
I wish I had known how accessible music would eventually become, I would not have amassed such a CD collection over the years - like nearly a thousand! Especially the ones where I only like a few songs! I sold a lot of them a few years ago.
Gary didn't say it in his post, but he has many many CDs. I would guess 4,000+.