How about planning a surprise Spanish-themed date night?
You could plan a dinner of his favorite Spanish cuisine (paella, tapas, etc.), decorate the dining area with Spanish-inspired decorations (colorful fans, Spanish flag, etc.), and play some traditional Spanish music in the background. You could also consider adding some Spanish wine or sangria to the dinner, depending on his preferences.
If you'd like to add a more tangible gift to this experience, consider buying him a Spanish learning book or tool or even a ticket to a flamenco performance, where he can indulge in his love for Spanish culture.
Hope this helps!
Or you can get him a star map with the date when he was born.
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.