How about a pottery kit that he can use to make his own pottery at home? You could also consider recommending a class or workshop at a local pottery studio. Additionally, a gift card to a pottery supply store could be a great option so he can choose his own supplies. If you want to make it extra personal, you could also consider commissioning him to make a custom piece of pottery for you!
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.