We've said no to wooden weapons before, so those are still a no - anything that's made to be a weapon automatically classifies as one.

Weapons that have been stripped down so they don't work (like magical weapons without their powers) or that are just for show and can't be used (like decorational guns with no actual trigger/chamber system) are probably okay, but we might want to judge this on a case by case basis. Is there anything in particular you're thinking of?