The State Fire Marshall's office recommends using flash lights, instead of candles, for lighting up jack-o-lanterns. And, if you use any dried cornstalks or dried flowers to decorate, keep them away from any heat source, including light bulbs.
Purchase only costumes, wigs and props that are labeled flame-resistant or flame-retardant. Remember that a flame resistant costume isn't fire proof. Always keep costumes away from open flames, avoid loose or baggy costumes and long wigs or flowing dresses. Also, put glow in the dark or reflective strips on the costume, and have children carry glow sticks or flashlights so they can be seen at night.
For older children, remind them to locate exits at a party so they can get out safe in case of a fire.