Steal as many jack o lanterns as you can, fill the inside walls with homemade napalm, line them up on someones sidewalk (not the yard napalm burns forever you could ignite the grass), string napalm from each mouth when you get to the last one have a friend with clean hands(didn't touch the napalm) light one and after the last one lights knock on the persons door and run.
With the left over napalm you can draw satanic symbols on large street signs and light them. We had alot of styrofoam one year after a friend got new furniture our neighborhood was never the same after that Halloween, I have left some details out cause I don't want to incriminate myself.