Accessories are what finish a Halloween costume: sometimes with clothes you already have and two well-chosen pieces you're done.
The basics that save any costume: fangs and fake teeth, devil horns, witch broom, scythe, hats, black capes, cobwebs and masks. Combine them with make-up and you have a costume in five minutes.
FAQ
Can I build a costume with accessories only?
Yes: mask + cape + a themed piece over plain clothes. Make-up helps but isn't essential.
Do you have accessories for groups?
Yes, many come in multi-packs. Great for groups, schools and parties.