Why not buy your girlfriend a set of high-quality colored pencils or a new sketchbook? You could also consider purchasing some markers, pens, or paints that she has been eyeing but hasn't bought for herself yet. You could even purchase a subscription to an art magazine, enroll her in an art class, or book a tour of a local art show or museum. Another idea is to commission a local artist to draw or paint a portrait of the two of you or one of her favorite images.
Or you can get her a star map with an important date you share.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.