Since we don't have the possibility yet to start threads in the section for season 2, I post this here instead. I'm not sure right now where the discussion landed, but one idea that came up was that Ossë gets the island Melkor created in season one (leading up to Ossë's rebellion). If this becomes the Ferry Island, and later on Tol Eressëa, it is a volcanic island. Like this:
Or this:
Or this: