There is a tree near my suburban childhood home that is in the middle of the road surrounded by a 2 foot circular brick wall. Growing up, there was a much larger tree in that place, but several years ago it fell over. My mother cried, she thought they had cut it down on purpose. The city replaced it with a young tree with a sturdy trunk but not many branches.
I decided that it looked sad, especially when its leaves fell off in winter. So I concocted festive crime, in which my mother and I brought oversized ornaments, bows, and boas of tinsel and hung them in the tree around midnight a few days before Christmas.
We take it down around New Years (but not New Years Eve, too many people out). We figure if we get caught we could be charged with jaywalking into the middle of the street where the tree is, or maybe littering for securing objects on the tree.
We've done it for a few years now. Not sure it will happen this year. It's a fun term to whisper.