I was wondering if there is a way to "set" homebrew items to a certain campaign. I am running 2 different campaigns with 2 completely diffrent settings (classic dnd and a space campaign.) So lets say i want a laser rifle homebrew weapon in one, but i dont want that weapon showing in the other is there a way to make it where some items show in one campaign but not in the other.

There isn't right now, but hopefully in the future, each campaign will be able to filter sources and homebrew available to its characters.