The parents of a preschool child diagnosed with autism must take their child on a plane flight and are concerned about how they can make the experience less stressful for her and their fellow...

The parents of a preschool child diagnosed with autism must take their child on a plane flight and are concerned about how they can make the experience less stressful for her and their fellow travelers. The nurse in their psychiatrist's office suggests a dry run to the airport in which they simulate going through security and boarding a plane. In addition, the nurse suggests taking items to help the child be calm during the flight. In what order of priority from first to last should the parents employ the items listed below?