How about a paddleboarding adventure? You could organize a day trip to a nearby lake or beach and rent paddleboards for the day. You could even surprise them by packing a picnic lunch and snacks. Another idea is to get them a personalized paddleboard, something that has her/his name or a special design. Or, if they already have a board, you could get them some new accessories for it, like a new paddle or a waterproof phone case to take on their future paddleboarding adventures.
Or you can get her/him a star map with the date when she/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.