May it be physical media, scary little dolls, cute plushies, rare coins, shoes, etc.
It’s easier for your friends to find you a present or at least something that’s related to your fixations. :) also it’s fun!
Additional rec: if you’re doing the gifting, include something personal, something that you handcraft, something that will take you at least 1-2 hours to make. A pop-up card, cute origamis, a collage, maybe even just a heartfelt letter. Maybe they like frogs? Draw a couple of frogs around the edges on the letter/card. Or some cute stickers that you know they’ll like. Doing so says, “I was thinking of you the whole time I made this. This is for you and you only. You are important to me and I have a lot of time on my hands to curate something for you because I love you!” <3