This is one of those little things I look at on the web, and just want to show people. It isn't momentous, it's just a bit of creativity that should be spread around.
Someone is making animals out of plastic bags, and tying them to subway grates, so that when a train passes beneath the street, the animal springs up:
There's something so charming about this: the found material, the borrowed energy from the subway, and combining them to add new life to the streetscape. Genius!