Last year my wife and I made this Princess Mononoke Costume for our daughter barely in time for Halloween. I just recently noticed I posted to social media but never posted here.
The mask was made with paper mache and paper clay, coated with plasti dip and then painted by MrsRedBeard. The ears, knife and spear were made with foam matting, coated with plasti dip then painted. The fur was a bath mat that MrsRedBeard found, on Amazon I think, which was way cheaper than buying it from a fabric store. The knife handle was made from a ping pong paddle and the spear handle was made from a paint roller handle.
The dress was found at a discount clothing store for very cheap. MrsRedbeard modified the dress, sculpted the necklace with polymer clay and made the fur into something wearable.
The finished costume