A customizable Marquee Affiliates box. A customizable box to go around the copyrights. Also includes a custom copyright field which will place your copyright above the rest of the ProBoards copyrights in the box.
They both have settings for width, and background image.
If you use multiple themes, you will need to edit which themes this plugin runs on (doable from Admin > Plugins > Manage > Edit button) and install duplicate copies of this plugin.