Liquid Motion Bubble Timers - Set of 3
Calming, soothing bubble timers can be used as a transition tool, in science centers, for light table exploration or to relax and relieve stress. Once colored drops have tumbled to the bottom, turn bubblers over to restart the motion. Each lasts for approximately 1 minute. Made from durable acrylic and approximately 6" tall, each set of 3 timers comes in assorted styles and colors.