Mason Jar Egg and Tuna Salad

Ingredients (7)

• + 6 hard-cooked eggs, chopped add to pantry
• + ⅔ cup mayonnaise add to pantry
• ✓ ½ teaspoon seasoned salt
• + ½ cup chopped pickles add to pantry
• + 1 (5 ounce) can tuna packed in water, drained add to pantry
• + 2 cups arugula add to pantry
• + 4 1-pint canning jars with lids and rings add to pantry