Ooze sensory rectangles are definitely a must-have for your sensory space. Turn this sensory hourglass filled with a thick, colourful liquid and watch it slowly flow down. It's a fascinating demonstration of the passage of time. They'll help your child to calm down and return to a peaceful state of mind.
Educational: aids in socioemotional learning through sensory exploration 
Useful: its small size allows you to take it everywhere you go 
Sensory: provides a fascinating and realistic visual experience