Toysmith Liquid Motion Bubbler (Various Colors) Flip this bubbler like an hourglass to watch the liquid elements inside squeeze, slip and float serenely to the bottom. This soothing visual display requires no power or mechanical parts, and can provide hours of entertainment. Durable construction withstands constant handling and resists cracks. The 5.75-inch bubbler is ideal for display on a desk or shelf. No assembly required. Captivating liquid motion This is not a toy