If your school therapist happens to be trained in sensory integration therapy, you may be able to have some of that calming, organizing activity written into your child's plan as well. (verywellfamily.com)
Building Bridges Through Sensory Integration Therapy for Children with Autism and other PDD ’s (thecommunityhouse.org)
For more ideas on how to incorporate regular household items into your child's therapy, visit Friends of Asi or read the book Starting Sensory Integration Therapy. (parentingsquad.com)