The Master Toys DROP is a captivating physics-based desk toy and sensory tool designed to provide a calming visual experience. This liquid motion bubbler features two colorful streams of oil that "drop" through a clear liquid reservoir, creating a rhythmic and hypnotic effect as they descend. Standing at approximately 5 inches tall, its durable plastic construction and leak-proof design make it a perfect addition to classroom sensory corners, office desks, or as a soothing nightstand accessory.