I did a double-take when I came across this article at Ars Technica, describing a chandelier that used gherkin pickles as 'light bulbs'. To my astonishment, it seems this isn't an unknown phenomenon. Here's a video report about the experiment.
You can read more about it at the link.
Personally, I've never been all that fond of pickled gherkins. Now, English-style pickled onions, particularly when served with rich, nutty whole wheat bread and sharp cheddar cheese . . . that's another story!