I decided to create a collaboration of fanon-related wikis with a name I don't know yet (vote in the comments!). You can also have your wikis join even if they are not about fanon or about OCs (so those users can help other users). Some popular subjects have their own categories. I also made a wiki hub for it. On the hub, you can put articles about your stuff or make articles about your favorite creations (be sure to credit the creators though).