To enhance the coastal nautical theme in your kitchen, incorporate rope accents and natural materials. Replace traditional cabinet handles with rope pulls for a touch of maritime charm. Hang pendant lights with rope-wrapped cords above the kitchen island or dining area. Consider using natural materials like jute or sisal for rugs or placemats. Introduce woven baskets for storage and display seashells or driftwood on open shelves. These elements will bring a rustic and beachy vibe to your kitchen.