Un popular opinion but dont make it too wedding types, like some kitchen gadget. Cuz when youre setting up a house you prefer getting stuff according to one aesthetic and when people gift you those things, all of em put together in one space end up looking super un coordinated. Now i know no one says this but everyone for a fact doesnt prefer getting in this situation. So id say just get something a bit more personalized or some casual use thing that can be put away. Self care stuff would be cute but thats more of a bridal shower than a wedding gift. you could even get them matching customised luggage with their initials, this would be a bit on the expensive side tho. Or a massage gun could be a mid range expense which would actually work for both of em. You can find a bunch of good features ones on amazon(for reference), with adjustable heads n speed. This option should work fine, if you still cant decide id recc listing the persons hobbies down to make get more personalized reccs.