There were quite a few KingdomHearts cosplayers at NDK. I'll have to get some of the pics up so you can see. (some key blade's were papermache and others were wood) Though I probably only ended up with one of KH. -_-
Mostly, I think it's all about where your (doesn't like using this term) talents are strongest.
Personally, I'm better at making accessories than costumes. Small stuff is my specialty, I guess. (like jewelry) But I want to make more weapons!!! (Honestly, some of the FF7Clouds that I took pics... I was drooling over their swords *heh* No, really.) I'm getting better with wire/metal... too bad I can't make a REAL sword to bring. *sniff*
Hey, Mayo. Find that link! ^_^ I'd like to see that!