How about a microscope set? You could give him a high-quality microscope that will let him explore the micro world around him. There are many options available online, from beginner to professional-level microscopes. You can also purchase books or DVDs on microscopy or subscribe him to a microscopy magazine. Additionally, you could purchase slides or petri dishes so that he can collect samples and explore his own surroundings. For a more personal touch, you could also create a scrapbook or journal of his adventures with his microscope.
Or you can get him a star map with the date of your first kiss.
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.