How about getting him a unique experience that celebrates Brazilian Carnival? You could look for local dance or music classes that teach samba or other traditional Brazilian dance styles. You could also see if there are any local Brazilian restaurants or bars that host Carnival-themed events or parties. Alternatively, you could consider planning a trip to Brazil for the two of you to attend the famous Carnival parade in Rio de Janeiro. If that's not feasible, you could bring some of the Carnival spirit to him by gifting him a personalized Carnival music playlist, a book on the history of Brazilian Carnival, or even a handmade mask or costume inspired by the celebration.
Or you can get him 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.