How about getting him a customized hiking daypack or a hiking backpack that he can use to carry his hiking gear and supplies? If he enjoys taking pictures of the outdoor scenery, you could also consider getting him a high-quality camera with a protective case that he can safely take on hikes with the kids. Additionally, you could look into booking a family camping trip in a scenic location that he's never been to before, so he can enjoy some adventure and quality time with the kids. Finally, you might consider gifting him personalized hiking maps or trail guides of his favorite trails or regions.
Or you can get him a star map with an important date you share.
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.