My son Austen will be five in October,I am looking for a great way to show him that making good choices and listening has a positive outcome. I have thought about a few things and want to know if a Penny Jar would be a good idea. I thought that when Austen listened and made good choices and helped me, that he could put a penny in the jar. When he didn't make a good choice then he had to take a penny out. However I am not sure how many pennies he should get before he got a little reward for doing a great job. Should it be weekly to start so that he sees what happens? Any suggestions would be great!