For someone who personally is more of an intrinsically motivated learner, do other instructors feel that certain extrinsic motivators are better than others. I've seen the suggestion that you ask the students to see what they value, but is there an overall trend? I work on a campus with an extremely diverse student population and have tried a variety of ideas: guest speaker round tables, certificates, on campus recognition, but nothing has really taken off. Also we have no budget so it has to be extremely low or no cost. I realize there's not one winning answer, but if you've had success with something I'd love to hear about it.