My chapter did a "Skippy Jar" every week at chapter meetings. Everyone who did not skip class got to put their name in the jar, and if your name was pulled, you won a prize.
We also did a "String of Pearls" board, which is similar to Sandy's Brag Board. You got 1 pearl for a B, 2 pearls for an A, and 3 pearls for a perfect score. Whoever has the most pearls at the end of the semester won a prize.
The VPS notebook has a pretty good list of incentive programs, too.
