No one has actually seen it, but a fairy interpreter asked a fairy and they described it as just a cloud of smoke and once in a while you trip over something in the floor.  The fairies purposely leave their trash in the floor because they think it is funny when people trip over them.
Inside the fairies church, Inside Church
fairy interpreter
cricket
I am a cricket. I sit in the field and make chirping noises. People think I am a lucky bug and sometimes they hunt me. I like it better when I am just in the grass.
Hey, hey, hey, why so grabby? There is so much glitter here. I wonder what purpose it serves! You are making me nervous, you aren't like any fairy I've ever seen. I am a fairy interpreter.... A bit different than an actual fairy. I am more of a means of communication.  Oh, okay. Well, i gotta be careful, yknow. People hurt me sometimes on accident because they think I'm lucky or something. Sometime people are very rude..... What do you suppose the Bee is doing? Probably after all this glitter.  Well, here is some for you! It may be valuable after all! Oh, no. Now I'm covered in it. It won't come off! Maybe we can use this feather to get it off! It's not working. I will surely be captured by people now. Maybe you can use my dress as a disguise!