Store leftover pasta salad in an airtight container in the refrigerator for up to 3 days. If you notice the salad drying out, add a splash of olive oil or lemon juice before serving again. Use fresh herbs for a vibrant flavor boost. Adjust the quantities of sun-dried tomatoes and feta based on your preference for a bolder taste. For a gluten-free version, substitute orzo with a gluten-free pasta of your choice.