How about a randomness challenge? Somebody could suggest a different random topic each week or so, and then the forumites could post a relevant comment, anecdote, or just make a snide remark about it. Some example topics could be "sports heartbreak", "pet shenanigans", "secret nerd hobby", "memorable TV moment", "board games", "e-juice disaster", "clothing mishap", "favorite pets", "strangest thing you ever ate", "I'm afraid of ...", "pencils or pens?", "dumbest movie villain", "how evil are paper cuts?", "has a tank, RDA or RTA ever tried to kill you with an especially nasty dry hit?", "foot massage or back rub?", "which do you enjoy more, lurking or posting?", "best pizza toppings", etc... Literally could be about anything except news, religion, politics, sexism, nationalism, crime, or soap on a rope.