Recently I wrote about a St. Pete neighborhood called Kenwood. I just learned about a holiday tradition in historic Kenwood:
The Kenwood Elves are an incognito group of pranksters who scout the neighborhood and decorate homes whose owners have made minimal or no efforts to decorate their homes. They string strands (often used) of lights, garlands and trim around the porch and yard. From these they hang unique items, such as empty cans, old socks and underwear, plastic or foam cups, broken ornaments and tea towels.
So far, the dozen plus elves have never been caught.
Most recipients accept this as neighborhood spirit and welcome, rather than an antagonistic attack.
Read the St Pete Times archives for more details.