For the purposes of the book, besides the obvious ones (Longclaw, Oathkeeper, Widow's Wail, Tyrion's dagger) I'm also the one's in possession of Randyll Tarly, Lynn Cobray, and Harras Harlaw will come into play. I also imagine the Blackfyre sword will come into play at some point.

For the purposes of the TV show, I imagine the only ones that they ever refer to are Longclaw, Oathkeeper, and maybe it's twin sword. I figure they've forgotten about the dagger, especially since they've forgotten about that whole plot point.