Place celery in 1-cup sealable plastic container; seal tightly. Place crackers in small resealable food storage plastic bag. Place in lunch bag with plastic fork and spoon. Add can of chicken, container of dressing, apple and carrot sticks.
At lunch time, open can of chicken and container of dressing. Use fork to lift chicken from can, leaving liquid in can. Add drained chicken and salad dressing to container with celery; mix well with spoon. Spoon mixture onto crackers. Apple and carrot sticks complete the lunch.