I recently got back into 8-tracks just for the nostalgic element. With a decent player adjusted correctly, they can sound quite good. I have an AKAI CR-81 for recording, and also installed a NOS AM/FM/8-Track player in my '79 Cadillac. Most of the time, I just buy old tapes off Ebay that I don't care about, erase the music, and re-record w/new labels. Here's a pic of one of my homemade tapes (CCR "Cosmo's Factory"):
