What actually makes a good photographer gift for your son?
The most reliable categories here are organization, lighting helpers, carry solutions, print-related gifts and accessories that are not tied to the wrong camera mount. Before buying, check the practical details implied by their camera system, favorite subjects, editing workflow and whether they shoot casually, professionally or somewhere in between. For the relationship itself, aim for something that respects what he is into now instead of what you remember him liking years ago. That also means avoiding buying an entry-level version of something he has already progressed beyond and not paying extra simply because a product is packaged as a gift.
The strongest gift ideas usually come from the person’s real habits: what they already use, what they talk about and what would make an existing interest better.