A Snow White Halloween costume is fun for both kids and adults. A great place to find a discount Snow White Halloween costume is at eBay. Here are some of today’s listings for Snow White Halloween costumes at eBay: If you don’t want to be Snow White, you can always be the witch with the poison apple. Or perhaps one of the seven dwarfs? Can you name the seven dwarfs in order? Doc, Grumpy, Happy, Sleepy, Bashful, Sneezy, and Dopey would all make fine Halloween costumes.