Mason jar oil lamp...canola oil and citronella oil-this is a great site devoted to mason jars! Mason Jars Using, Olive Oil, Citronella Oil, Oil Lamps, Jars Oil, Citronella Jars, Tiki Torches, Mason Jars Candles, Essential Oil Projects
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The latest in Mason Jar lights (May 2012) is this very inexpensive craft idea from the Thrifty and Chic blog. Her idea was to use Dollar store items to make these free standing Mason Jar votive holders similar to those seen at Pottery Barn.
Fill a Mason Jar With Christmas Lights. Dangerous. The lights emit heat, which will very soon melt the plastic of the wires leading to a short circuit. Pretty. But not worth the risk!