OMG! Discussed this as an idea a couple years ago! Glad to see it's possible. Electric Insulator Lights (from electric poles)
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Very cute! :) great idea for glass insulators
Repurposed Glass Insulator Pendant Light
insulators. developed in the late 1840s to insulate telegraph wires, glass and ceramic insulatoes were produced more and more from the early 1900s to the 1930s to aid in the transfer of currents over telegraph, telephone and electrical lines. aqua is the most ordinary piece and should cost around 4 or 5 dollars
Replace the light bulbs in an old chandelier with inexpensive solar lights. Hang it from a tree branch. You'll have gorgeous outdoor lighting without having to provide electricity.