Tapes, CDs, Vinyls, reel to reels, EPs, LPs, 33s, 45s, 78s & 8 tracks, anything really.
Strange as it may seem I wasn't into music enough as a child to actually want to buy something. Then again no one bought me anything either. Although I did listen to Marc Bolan, the Monkees (I owned 2 of these, but my versions had the band members hanging out of the sides)

And the Jackson 5. Most if not all was either from radio listening or TV and still I didn't go out of my way to do that either. Just one of them things, I was more into toons, comic books, comedy shows and movies back then.
My brother's first music tape was The Muppets, which he got with our first cassette player. :oops:
Player wise, we had a 50s/60s red and white Dansette portable record player and a 50s portable reel to reel (still have both stored away). I think we didn't get a stereo until the 80s. Funnily enough by the time 80s SKA/punk/Mod scene came around, the Dansette became the must have player again. Mp3s and iPods... we really suffered for our music. :lol: