It's a great combination of physical and digital. Similar to vinyl records, having a resurgence, MiniDisc really stands out as a very good portable physical solution:

- MiniDiscs are easier to write/re-write than CDs if you have a NetMD capable device, just load up https://web.minidisc.wiki/ in your browser and MP3s will get converted for the disc. - Smaller and more robust than CDs - Feels very "RetroFuturistic" compared to cassettes and records, if MP3 players hadn't taken off, it could have easily been the next big format