Popular Halloween Costumes and Characters The most popular Halloween costumes and characters include a variety of vintage and trendy themes inspired by popular culture. One-stop Halloween Shopping After choosing your costume, make sure you have accessories like wigs, hats, holiday makeup, capes, robes and masks that give your costume the finishing touches it needs. Then, pick up extra items for your Halloween celebrations, like indoor and outdoor decorations, trick or treat bags, buckets and candy.