I love making different playlists for my musical moods. I usually listen to it at night as a last resort if I can't sleep, or if I've woken up in the middle of the night and need help in getting back to sleep.
Also, when I'm visiting back home, I use the kids channel for my nephew when we have him for the day over at my mom's house. I can connect Spotify from my tablet to her Chromecast and have it playing from the TV for him to listen and dance.
Kind of annoyed that they've been working on "improvements" to the lyrics feature for quite some time now though, I really liked that feature and used it often when listening on my computer while working. I'm hoping they'll have it fixed very soon.