My SCP idea is a vase that when filled with flowers of the genus Rosa (roses) causes all people within 60m radius to rapidly produce extreme amounts of neuropeptide Y and prevents production of leptin and proopiomelanocortin (AKA it makes you think you're close to starving to death) resulting in the act of compulsive eating of anything edible and often resorting to eating non-edible objects and/or cannibalism from all but those with the strongest discipline in the manner of fasting. When empty for more than an hour the object appears to alter the mental state of all subjects within the aforementioned radius to think it would look better with flowers in it this effect intensifies until after 24 hours the object causes subjects to experience the effects of a LSD trip involving flowers of various kinds. In the event that it is filled with a dead flower the object will cause everyone in the aforementioned area to perceive the flower as smelling "unbearably vile" often resulting in profuse vomiting until removed.
Object would be classified as safe and would be stored in a locked glass case in a Senior Researcher's office. Object should not be broken as the remains object will function as separate vases but will be locked in the state of being empty and the only known way of stopping this is to destroy all of it via complete incineration or possibly by SCP-123 (Would have to go though cross-linking procedure but am not aware of how hard this may be).