How about a bee conservation kit? You can find bee houses that simulate natural habitats for bees, along with seeds for bee-friendly plants. This is a great way to encourage your friend to continue their passion for bee conservation and help create a space where bees can thrive. Additionally, you could consider a donation to a bee conservation organization in their name, or a book about the role of bees in the ecosystem.
Or you can get her/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.