How about a beekeeping starter kit? Your dad can learn how to keep his own bees and create even more bee-friendly landscaping. Alternatively, you could give him a bee-friendly plant, such as lavender or sunflowers. And if he already has a lot of plants, you could give him a bee house, which provides a safe place for solitary bees to nest.
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.