What actually makes a good homebody gift for your son?
Start by eliminating mismatches: decor chosen purely to match your taste rather than theirs. Then narrow the list around comfort upgrades, atmosphere, useful home objects and things that improve an activity they already do indoors. Because this is for your son, keep his current hobbies, level of experience and the gear he already owns in mind and avoid buying an entry-level version of something he has already progressed beyond. A small but precisely matched upgrade can be more memorable than a larger generic present.
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.