There's really not much to say about this one... We like to project the Spotify tab while we're listening to music and it looks a little ugly. We made a Chrome extension that would overlay a much nicer visualizer over the tab. In other words we solved a problem that literally only we had, but it was so worth it.
The tool makes use of a MutationObvserver on the now playing bar to detect song changes, then it updates the info accordingly. It's incredibly lightweight and looks really aesthetic.