Which NX Covers work with Fans?

Goblin Fire, Ghost Weapon should definitely work.

Demon Sickle will not.

Elizabeth Fan would probably work.

In my experience, anything that can cover a Wand or Staff (or anything one-handed, I guess) can cover a fan, since it acts like a Wand

Yea I learned a lot of things that should work don't. Like angelic buster with the teddy bear nx cover...
Can never be too careful xD Goblinfire would be pretty cool on a kanna though!