How about a handheld digital microscope? This would allow your friend to take detailed images and explore the micro-world even more deeply. Additionally, you could consider getting them a book on the topic of microscopy, featuring fascinating scientific images and information. Alternatively, if your friend has a favorite organism or tissue sample they like to study under the microscope, you could consider getting them a customized microscope slide, featuring this specimen.
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.