Sock mask

On the day of the release of the 2011 Halloween event, the sock mask appeared as an item that could be put inside a toy box in a POH. The Halloween update on the Runescape homepage mentions that Beauty's (the statue helped during the event) twin sister Fame has something special planned for the 29th inside the Deathcon theatre which could possibly include the release of these items. Also, the the Behind the Scenes October mentioned that Death may have something planned for Runefest, which could be these items.