Waterbeads

Water beads which are squishy, bouncy, smooth marbles made from polymer. They are relaxing to touch and do not feel slimy and also do not dissolve. When they reduce in size, they will grow again by adding water and can be used over and over again.
 

There are many different ways to play with water beads, you can add them to your sensory bin, sort them by colors, count them, add them to shaving cream or slime, fill them into balloons, or freeze and smash them.