Hire a repair man come to your house and fix a broken appliance. Once he has entered your house, build a wall around him and make sure he is trapped for two days. After twp days, he will die and turn into a ghost. Whenever you have a broken appliance, the repair man's ghost will automatically appear and fix it for free. Note: This can also be done if the repair man gets electrocuted and dies, while trying to fix an appliance.