Great to read this, thanks all for posting!
Being the strange nerdy person that I am, I've got a few music boxes and bells of different origins and sizes. But the big bulk of my collection is made up by digital stuff: music (mainly classical and traditional because that's my main obsession, but also some jazz and old pop), audiobooks and radio plays (many in English but also in other languages), old and new languages courses (anything from sanskrit to tahition), and so many other audio-based things that most people would consider useless. I simply love these things, can't help it.