Personally I don’t think you should do any.
An elimination game is a definite no as there are already plenty. Trivia, while good in theory, requires a lot of preparation/dedication on your behalf for it to thrive. Many people have tried to make trivia here in the past and it has almost always failed as they weren’t prepared for all the work of making it captivating and weren’t capable of consistently adding to it.
In summary, don’t do an elimination game and only do trivia if you are willing to put in the hard yards.