Monitor the number of collect calls made from payphones.
Amount of time per day required to accomplish: 15 minutes. Why? Because there are 150 million cell phones in the country and only 300,000 payphones. Plus, when was the last time you made a collect call from a payphone?
Pay: $50,000/year. Why? Because a 3-minute collect call cost $25 and someone is still making them! Also get to spend plenty of time staring at the wall.