How about planning a surprise trip to Brazil during the Carnival season? You could book tickets for both of you and plan a trip that includes staying in Rio de Janeiro, where the largest Carnival celebration in the world takes place. You could even book a guided tour of the city, so you'll get to experience the best of the city during the Carnival season. To make it extra special, you could also book tickets for a samba school parade, which is the highlight of the Carnival. Additionally, you could consider purchasing some souvenirs, such as a traditional Brazilian carnival mask or a samba costume, to take back home as a reminder of your trip.
Or you can get him a star map with the date of your anniversary.
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.