Abstract: A luminescent vessel for containment of drink and its accompanying luminescent coaster base, each provided with bands of energy absorbing photo-luminescent material, emit bright and long lasting luminescent light making both the vessel and coaster base visible for hours when in a darkened environment. This visibility during the dark makes it possible that a sleeping person, awakening and desiring liquid, can see the nearby vessel, take it from the coaster base, use the vessel, and then return it securely to the illuminated coaster base without incident of spill or disturbance of the darkened environment.