When guests see an object, there should be a way for you to set what emotion is spawned by it. For example, if guests see a ghost in a haunted house, they would become scared and react appropriately (scream, cover eyes, flinch, etc.). This would work with some basic emotions such as scary, funny, happy, annoying, sad, etc. There could also be an intensity setting (eg. a picture of a ghost is less scary than a ghost flying right at you).