What are some ways I can improve my gift-giving skills for my boyfriend?

My boyfriend (19M) recently shared with me (18F) that he feels unappreciated because he thinks I don’t actively engage with his love language. He has expressed that his love language is gift-giving, and he often surprises me with thoughtful presents! I genuinely try to reciprocate his gestures, but I find it challenging to navigate how to give gifts in a way that feels meaningful. I'm worried that he won’t like the gifts I choose for him since he has such specific tastes and prefers niche items. I hate the idea of giving a gift that he might not truly enjoy, as it feels pointless if he has to pretend to like it just because it was a present. I’ve also considered planning surprise outings that I’d pay for, but again, I’m unsure if he would appreciate the experience, and I want it to be something he truly loves. The dilemma is that if I want the gift to be a surprise, I can't straightforwardly ask him what he wants. I'm feeling lost and would really appreciate any advice on how to improve my gift-giving skills! P.S. He’s not picky at all; I just want to make sure I give him something special and am afraid of disappointing him with a less-than-perfect gift.