I think it would be cool to have a widget that plays a music visualizer whenever music plays. Whether that be through a music service like Soundcloud or a alarm clock, it would be pretty cool. Customization would, of course, be included, such as the shape and color of it.

For example of what I’m talking about: http://undefinist.deviantart.com/art/VisBubble-Round-Visualizer-for-Rainmeter-488601501