Scrawl Banner-29kb
Customize #20206
You can always put sounds and/or music to flash banners, but It's rarely appropriate unless it's for a personal non-commercial site.

Shark Banner-93kb
Customize #20207
And here I made just one frame of the animation clickable. It wasn't till afterward I thought "Why would anyone ever do that?".

Pulse Banner-54kb
Customize #20208
Many many more coming...