When the child is awake, drape it across his lap or around his shoulders. The deep pressure touch stimulation brought about by the blanket will produce serotonin in the child, which is a hormone that will help to calm him down.
Great ideas for creating an obstacle course for breaks during inside recess. Heavy work play time ideas for kids - great suggestions for kids with autism and/or sensory processing disorder from And Next Comes L
Will Your Child Ever Outgrow Sensory Processing Disorder