Tubbles Sensory Stones - Vibrant VeggiesTubbles Sensory Stones are perfectly weighted and tactile, drawing children of all ages into a world of imaginary play. Crafted from a unique mix of vibrant resin and natural granite, Tubbles are the building blocks of imagination. Watch your kiddos stack, play, and create endless stories in their sensory tub, mud kitchen, bath, and at the beach. More than a play prop, Tubbles are weighted for calm and make a grounding anchor point for fidgety