Are there any actual unique weapons in skyrim that look similar to bound bow? You know, all ghost-like and cool.

Would like to get my hands on one for my collection.

Drainspell bow is ghostly. It's in Labyrinthian and has a matching ghostly blade, Drainheart Sword.

Oh man, it looks sweet. And theres a whole weapon set of those?

There's a bow and sword for sure. I can't remember others, but I can't prove there aren't either haha.

There's a bow, sword and battleaxe which iirc are all ghostly ancient nord weapons

Ghostblade looks perty cool, as well.