I am a big fan of walking around in nature (even parks) enjoying nature sounds. It positively affects my mood. Bird sounds are my favorite, but while in bed I love the rain outside.
Everything has its moments :) Most of the times I like complete silence, so often I sit up until 3-4 so I can sit on the balcony for 10/15 minutes in complete silence. Other times walking in nature hearing the environment and animals brings a lot of mindfulness and introspection. I've been nostalgic for the sounds of a running train in the past too, or just the rumble of living next to a busy plaza, but too much of that would be annoying too.
I guess ultimately variety is what I like :)
Same! To the point that when I'm home I'm usually playing outdoor ambient noise mimicking that.
https://moodist.mvze.net/