Jar Light with Glass you can use jars to make pendant lights, lamps, chandeliers and lots of other great things. Jar Light with Glass what were lightning jars? A lightning jar had a glass lid attached to the jar via two pieces of wire (referred to as “wire bails”), which acted both as a hinge and a locking mechanism for the lid. A rubber ring was used between the lid and the jar rim to actually effect a seal on the jar.
