When it comes to buying gifts for couples, it's important to consider their shared interests and hobbies. You could get them something that they can enjoy together, like a couples' spa day or a romantic dinner at their favorite restaurant. If they're into adventure, you could get them tickets to a local event or activity that they can do together. Or, if they're more traditional, you could get them something sentimental like a photo album or a love letter. Whatever you choose, it's important to make it special and meaningful for the two of them.