How about a custom cross-stitch kit? You can create a design on your own or use one of his favorite patterns, and have it turned into a kit including everything he needs to get started. You could also get him a new cross-stitch book, a set of embroidery floss in his favorite colors, or a storage container to keep his supplies organized. If he's not already a member, you could sign him up for a cross-stitching subscription box so he can receive new patterns and supplies every month.
Or you can get him a star map with the date when he welcomed you in this world.
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.