Liquid oil hourglass
The descending bubbles have a soothing and mesmerizing effect that will keep kids entertained for hours,gravity will guide the colored droplets travel down at slow motion space.This liquid timer makes the perfect fidget toys, office desk toys and even as classroom rewards, like a stress ball used for hands, these are perfect as ADHD toys for gentle visual stimulation. You can get it here https://goo.gl/Sn9WRA
http://on.fb.me/unboxingexperience