In 1778, shortly after Benjamin Franklin introduced the lightning rod, Paris saw a fad for umbrellas and hats that made use of the new technology. A chain ran from the accessory down to the ground and would (in principle) carry the electricity from a lightning strike harmlessly into the ground.

I can’t find any record that such a strike ever happened. Lightning rods didn’t become popular in the United States, even to protect structures, until the 19th century.

(Thanks, Jon.)