scarlet agate
Alpha 1.5 had a useable camera, it would stun the guest for a second or two after flashing him, something like this would be a really cool item in full game and make you feel more like a journalist. Maybe Ai's other than the guest can have different reactions to it aswell to give them more personality.
pale quarry
I think the camera stun would be great for the forest section because of how aggressive the guest is. There should be a cool down so you can't spam it though.