The soundtrack in this game is awesome. My only complaint about it is that the music doesn’t play enough!
I would love if you could create stereos or boom boxes that you could put into different rooms or structures and choose what track to play. The sound would only carry so far and sound output would increase with the material used to build the device.
This would be great for setting the ambiance in a settlement, maybe you have a street that you’ve put boomboxes all over to play the same track list, kind of like some rock speakers.
You could couple this with the awesome spark battery idea I’ve seen suggested.