I’ve actually done this kind of thing before. I saved a really old family audio recording that had only one more play in it before it disintegrated, and I’ve done a few other surgeries for other reasons, too. It’s fun for a short time, but in the end it is more about listening than tinkering because there is only so much one can do.
I understand people liking cassettes, I still do, but not enough to collect, listen to, or tinker with anymore. The same goes for VHS.
I do miss picking up a pack of cassettes, especially a good brand, quality, or tape length. Especially if they were on sale, I’d get the new newspaper first thing on Sunday morning and see what cassettes were on sale in the ads. That was a big deal!
I liked cheaper tapes, too, which suited my purposes and allowed me to record more things. Walgreens had these really cheap tapes that worked really well. Scotch was a nice in-between brand, I’d get those at Target. The feel of the plastic cases was so nice.