Mother of two and crocheter extraordinaire, Stephanie Pokorny (aka Crochetverse), makes amazing costumes every Halloween for her kids.
She says each costume takes roughly 45 hours and are all done freehand with no pattern. Each costume is fully crocheted and that provides some needed extra warmth as Stephanie and her family are based in Ohio where it can get quite chilly on Halloween!
You can find many more awesome works at the links below. On her website, Stephanie also offers patterns (both free and paid) along with tutorials, product reviews, and crocheting resources.