Here's a few things to do to get a little satisfaction:

Go through the neighbor's trash. Everyone get credit card applications. Fill them out. It they're really trash, they'll accept the cards and run up a bill.

Sign them up for magazine subscriptions, visits from church's, and insurance agents. Call any insurance office, give the neighbor's name, and tell them you want to discuss insurance coverage.

Go to home improvement shows and drop their name and address into every fish bowl.

If they're predujiced, sign them up for newsletters from opposite races.