How about a subscription to a popular interior design magazine such as Architectural Digest or Elle Décor? You could also consider getting her/him a gift certificate to a home décor store like West Elm, Crate & Barrel, or Pottery Barn. If you'd like to give a more unique gift, you could consult local artisan shops or Etsy for handmade decorative pieces such as a decorative bowl, woven basket or print from local artists that would fit her/his style. You could also gift an online design course, such as those offered by Skillshare or Udemy, to cater to her/his interests in interior design.
Or you can get her/him a star map with the date when she/he was born.
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.