I talked to a friend and she swears by sticker charts. Sure, her girls are a little older.. and well they are girls, but I thought I would give it a try. We went to the store and JJ picked out 3 different kinds of stickers.
Here is a picture of JJ with his completed reward row! (it looks like he thinks it is lame, but he really does LOVE it, he has just mastered the "a tad too cool for this" look).
After each rows, he gets a little prize, and this time it was a "grow your own monsters" kit from the Target dollar spot.Wish you could hear him because is is yelling "THEY'RE GROWING MOMM!!" Adorable. So far, this chart idea has really worked for us.