1. Create a dungeon-crawl adventure for the Ruins of Stor-Gris. This is an ancient ruin that represents the capital of an ancient goblin-orc empire. Untold secrets may lie here. Maps of the fortress are already done, and a write-up of the Empire when it flourished is done too.
2. Create an adventure that takes place in Festerine swamp. Who knows what the swamp holds.
3. Create a spy-intrigue adventure about the players sneaking into an occupied city to find information.
3. Detail the orc city of Gorug. It has a secret breeding plan to create specialized orcs and dark folk.
4. Race or kingdom-based prestige classes-- this would take some reading of the site for flavor.
5. Any balanced original feats or spells.
6. Stories-- I give you the setting and major world events, you supply the rest. We have some talented writers here, so I think this would be a lot of fun.
7. Maps-- many possibilities here. Post interest in this thread for further details.
Several people from this site (Loki, Chunky, Squeak, Medesha, Valanduil, ryator, Galadwen, Lord Anki, Digorig) have already made great contributions (this list is not all-inclusive). Anybody else interested?
EDIT: This list has been updated on 12/4/07.