I live in Albany... capital of NY. :P It's a rather lame city (having grown up near NY City), but a city nontheless. I have a small side yard and I've taken pretty much the entire thing over with plants.
I talked to my dad last night, and he suggested mixing cayenne pepper, vegetable oil, and some water in the blender and spraying down the plants with the mix. Spicy plants! No one will want to eat them. I like the pinwheel idea too. I'll have to see if I can find a few. I'm down about 3 corn stalks now :\\ One of the rows wasn't doing great to begin with. I hope I have enough for them to pollinate!