NeeDoh is the latest squishy sensory toy to go viral. Social media is reporting how these blobs of gel are flying off the shelves, and are in short supply. But squishy sensory toys have been around much longer than this latest fad. You might remember putty, slime or stress balls. So why are these products so popular? And when are sensory objects more than just toys? What are these products? NeeDoh is one of many stress-ball-esque, pliable, squeezable products. They’re mainly made from a type of rubber or polymer. And their composition affects their consistency, pliability, texture and ability to form shapes. For instance, they can be soft, stretchy and oozy while still being able to hold a shape. Some form into a ball and can bounce. Often, the products are said to be non-toxic, durable and satisfying to squeeze repeatedly. Why do people like them? People find such products appealing for a number of reasons.…