worker bee writes:

Have you ever engaged in these type of neighborly wars? Any good ideas?

Nope, never.

But one of my ex-neighbors did.
In fact, he was in a constant battle with the neighbor across the
street. One day he comes home and finds a paper bag full of dog **** on
his front stoop.

He storms across the street with the bag and starts yelling at the
neighbor. After the argument escalates for a while he returns home
threatening that he'll be back and there will be violence.

The neighbor follows him with a shovel and just as he reaches his house
the neighbor hits him in the head with the shovel.

And that's how he became an ex-neighbor. A dead ex-neighbor.

--
Dan Espen