Bannerless chat box would be nice.

The sounds have a good clear tone. I use them to call.

Remember the movie Ferris Buellers Day Off. A bit of music in that movie goes “Oh Yeah!” and repeats for a bit of a while. That would sound good to attract someones attention to the computer.

Hey! What about a doorbell.

When my chatbox is minimised, my visitors can ring my bell. hmmm. just a thought.