When students participate when no one else is or answer a challenging question they can get 'smart beads' to wear. they trade in smart beads at the end of the day for a little note that goes home to their parents! AWESOME :) .....I like this uses parent praise as the rewards, and recognized academic achievements.
LOVE THIS IDEA: teacher picked a stick and they never knew who that person was until the end of the day. If that person behaved in line, listened and followed directions in class with few warnings, they got a surprise out of the treasure box and their name went up on the wall of fame..if the mystery person did not behave their name went back into the box and it was never revealed.