How about an at-home escape room kit that you can both do together as a Valentine's Day activity? There are several different ones available online that range in difficulty level and theme. This could be a fun way to spend quality time together while doing something he loves. Additionally, you could also surprise him with a gift card to a local escape room once they reopen or a membership to a virtual escape room platform.
Or you can get him a star map with the date of your first kiss.
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.