No crafting involved in mine, but I am going as a fried agg... A yellow shirt with a hood, and then a white pullover over that. Last year I was a "buccaneer" where I made earrings with a dollars worth of coinage on them!
My daughter wants to be "a ghost with a spider on the top" thank GOODNESS for having an such an easy-to-please 4-year-old!! I just bought 1.5m of this slightly textured white fabric, and I'll just plunk it over the top of her head, with a buttoned 'collar' to keep it where it should be, and paint some black eyes with cut-outs so she can see.
DH is going as a "redneck" or a zombie... No crafting in that, except maybe a beer 'helmet' (I'm thinking of tying a beer can to either side of his head with some duct tape or pantyhose!)