See the full review at br The Tub Time Bubble Maker is an enclosed, battery-operated bubble blower designed to entertain little ones while they're in the bathtub. The toy's suction cup securely adheres to a tub wall. Fill the bubble maker with bubble solution and then press the button for a continuous stream of bubbles. Press the button again to stop the bubbles. The Tub Time Bubble Maker comes with a four-ounce bottle of tear-free bubble solution.