Liquid Floating Timer Motion Visual Clock Timer (1 Pc / Multi Color)School Children Activity Liquid Timer, Liquid Floating Timer Motion Visual Clock Timer Hourglass Oil Drop Toy, Liquid Bubble Motion Timer, Birthday Gift (1 Pc Multi Color) Description : Great for home or office desk decor. This gorgeous oil timer is great for sensory play. Use as a calm down tool or science tool. Turn them over and watch the colorful liquid drip down, one drop at a time. Great Gift for kids, watching the bubbles fall and bounce