I really go in there and lead by example. She also uses public recognition, handwritten notes, and incentives such as refreshments to keep her staff hyped up about a project. I also try to get them to remember why we're doing this. For example, after a clothing drive, Phipps took her co-workers with her to deliver the donation. They saw all these people smiling and thanking them.
People like to hear that and be rewarded for what they've done.