Hey there,
i dont think this is that earth shattering so i am posting it, but i have always wanted to see a self contained table or CSS style "widget" that could be placed on a normal web page or anywhere you wanted it.
Its RSS based, when there is an update on an RSS page from a sponsor, the image (could be a pic or embedded video) and text show up automatically in this table and a banner matching the site is called and goes on top of the table (or bottom).
And on the bottom you have a space which shows maybe a thumbnail and text from the PREVIOUS update that was in the table.
Heres a layout of sorts:
The idea being that you have this fully contained ad unit which is self updating anytime the sponsor puts up new content, or from any RSS update page for that matter.
You might find this pretty routine but its beyond my scope.