Combine eggs, zucchini, carrots, celery, and green onion in bowl; set aside. Mix cream cheese, mayonnaise, and seasonings until thoroughly blended. Combine cream cheese mixture and egg mixture. Cover and refrigerate until ready to use.
Serve on split hard rolls, bagels, whole wheat or white bread slices, or croissants.
Nutritional Analysis per serving: calories 90, protein 8 g, carbohydrates 2 g, fat 5 g (1.5 g saturated), cholesterol 215 mg, sodium 180 mg.