When we lived in Colorado, one year in Primary, all the kids took turns sharing a "warm fuzzy" moment, when they did something nice or special for someone, and they, in turn, felt warm and fuzzy inside.
Desperate for order in our home several months ago, I created our own "Fuzzy Jar". The kids can earn fuzzies for helping around the house, being reverent at church, and just overall great kids. The perk: they pick their own prizes.