One idea could be to make him a gourmet mayonnaise gift basket. You could include different artisan mayonnaises from around the world, unique flavors like truffle mayonnaise or sriracha mayonnaise, and maybe even some high-end sandwich ingredients to go along with the mayonnaise like high-quality deli meats, bread, and cheese. Another idea could be to get him a subscription to a monthly mayonnaise club where he could try different flavors every month. If he enjoys cooking, you could also consider getting him a mayonnaise cookbook so he can experiment with different recipes.
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.