How about a unique aquatic plant for their garden? You could gift them a beautiful water lily, lotus plant or any other water-based plant they may like. You could also consider gifting them a small fountain or pond to create their own water oasis in their backyard. In addition to that, a book on aquatic gardening could be a great resource and inspiration for furthering their hobby. If they enjoy adding fish into their aquatic garden, a unique fish-shaped birdhouse or a personalized wooden sign with their name and the name of their garden would also make great gifts.
Or you can get her/him a star map with the date of the wedding.
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.