You do find yards "decorated" as this one is at left.
No, those aren't strange flowers. Nor are they Easter eggs....They are plastic forks. I asked my daughter about this and she said that is was less destructive. Kids "fork" people's yards as is isn't as messy as toilet paper and it is now less expensive.
In addition, the "forkee" can retrieve the plastic cutlery and save it to use on another victim....Strange. But a tad more sympathetic to the recipient.
I know that for a while in Meriden, CT all the backs of the stop signs were spray painted "TWP"--which meant "tagged" or "tagging" "with pride." It turns out that some kids who wanted to seem "bad" but who were pretty standard issue kids were doing it.