Actually, I really like celebrating Black Valentine's Day, because it is our own traditional festival. As for what to give as a gift? Hehe, okay, let me share it with you.
My boyfriend gives me a tag every year. Although it looks simple, he will write down our memories of each year on the tag, and then give me one and keep one for himself. In this way, every year we are together has a witness. We have been together for 3 years now, and I have received three such Black Valentine's Day gifts. Although our annual gifts do not cost much, they are very memorable. Hehe, I hope I can receive tags engraved with our love memories from him for the rest of my life, hehe.
The above is just my personal sharing, hehe, in fact, every couple must have some beautiful memories of their own.