Spotify Cursor Pointer v1.0
By default, Spotify Web Player doesn't change the mouse cursor when you hover over the Play button. I find it to be counter-intuitive and annoying.
This extension will remedy that by changing the cursor style to Pointer (a hand with a finger). It is how most websites implement it, and it makes for a smoother user experience.
Currently, the Pointer style is added to all Play buttons, as well as the song progress bar and the volume bar.
Icons by https://dryicons.com