We have been using this reward system for a few weeks now and we love it! We give my 3.5 year old stars for helping clean up, not arguing about bedtime/ naps, etc. we let him pick his end goal for when the jar is filled up. This time he picked going out for ice cream but you could do a new toy, sweet treat, local trip to somewhere fun, etc. He gets so excited to put a star in the jar!