I did a reward system for my Burritos last year and it certainly went well. Every good deed and sweet gesture were rewarded. Some would say that this is isn't effective because it is like a form of bribe but for me it is not. It's my way of teaching my kids that in every action you make in life, there is always consequences to it, either good or bad.
This year, we start anew. For every sticker that they receive, they get 10 cents for each. It isn't much but if they are zealous enough in helping around the house and continue to do good in school , they will accumulate a lot. I gave them the choice to spend their earnings last month but they chose to put it in their savings, their "Adult Money" as Ms. Burrito refers to. This is a fun reward system for my kids, you might want to try it too.