How about booking him an acting class or workshop with a reputable acting coach? This would allow him to further develop his craft, learn new skills, and network with other actors. If he's interested in a particular area of acting, you could look for a class focused on that (e.g. improv or method acting). Alternatively, if your budget allows for it, consider taking him on a trip to a city known for its theater scene, like London or New York City. You could attend a play or two together, and even take a backstage tour or attend a workshop there as well.
Or you can get him a star map with the date of your anniversary.
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.