  So this is week 2 using the responsibility chart. I think it's going well, but it's one of those things whose value I have to really sell to my son. This thing is set up like a grid with days of the week going down and responsibilities going across. It's a magnetic whiteboard and comes with a gigantic set of magnets with all sorts of cute pictures like stars, balloons, hearts, etc.
and magnetic responsibility name plates to set as the jobs like stay dry, clean up your toys, share, no whining, help mom, help dad, and so on. There are about 20 to choose from, plus blank ones you can write on. The point is you pick five or six to put in the grid. This is a particularly convenient model for us because Aidan's school follows Piaget-based curriculum, which focuses on key "jobs" each person is responsible for like nice touches and listening ears.
While Aidan does have the crucial development skill (he'll be 3 later this month) for the chart of understanding consequences (in toddler talk, he gets why and because), he's still very process oriented rather than our boring old adult way of thinking, goal oriented. So the biggest thing I've had to stress on this is why he wants to get stars, and how getting a bunch of stars will help him have things he really wants. Right now the things he covets most in life are riding his new scooter and putting his new tent up in his bedroom in which he can play camping, and even sleep in the sleeping bag sometimes (even though every night he's done it so far he gave up on sleeping in it and moved back to the bed within an hour of bedtime... go figure).
To teach him to covet the prizes, and therefore positively motivate good behavior, I've made a big freaking deal of the stars and balloons, giving them for every good deed, and really talking up the finale award, then when he gets the giant award, I remind him all the while by saying silly parent things like, Aren't you glad you got so many stars so you could put your tent up? I think he's getting it... 
