I have another idea. You know how many of the series or collection pages have art about the series? There are some that don't. Why not have a contest to design the art for collection and series pages? It could be just for those without there own art, or it could be open to all series and collection pages. It could be part of a site redesign somewhere down the road as well.
The Halloween and Christmas headers could be updated for 2009 for example.
There could be art for each page of the Flash Portal History.
Castle Crashers collection only has the name - no art.
The Eddsworld series page could use some art.
The Gunchest page could as well.
I do not know if this is a good idea. I think that it will get people busy. Also, I think it is important that something comes of the art that is produced. It shouldn't be buried in some BBS thread to be forgotten. At least put an article in the Lit section when you have one of these contests.