What is meant by “lining up toys” as a sign of autism? My 2 yo will take our dining chairs, for example, or baskets of toys, and line them up in a row and pretend it’s a tube train. It’s always a tube train, and she always does it quite tidily. She doesn’t line up other things. She doesn’t show any other signs of autism and is nursery three days a week where they haven’t had any concerns. Is this something to speak with a HV about?