Interesting. Our fire marshal had an article in tonight's paper warning parents away from plastic and synthetic fabrics because of the nasty burns caused when they melt. He highly recommended that decorations both indoor and out be lit with LED lights, not candles. That makes the most sense, though personally I wouldn't worry about a candle inside a moist pumpkin set on a stable surface. If a princess gown blows near a LED light it won't catch on fire as easily as a candle no matter what the dress is made from.