KLM

Fly up front with KLM Royal Dutch Airlines, and you’re gifted something with lasting appeal. If you traditionally think of first class as merely a comfortable bed in the sky, it’s worth noting that a long-haul experience in a premium cabin can include various perks, ranging from gourmet meals to luxurious pajamas. However, among these features, the amenity kit—often comprising scented lotions and travel-sized gels—might not receive much attention. KLM, on the other hand, offers a collectible that has become iconic among frequent flyers: the Delft Blue House.