I just knew that there's a Coin Deposit Machine now at some branches of some major banks. So, go and find your piggy bank and it's time to deposit all of your coins. I'm going to deposit mine too since, I always keep the small change in a container. At least I can turn those coins into my rainy days saving. This kind of machine is not so popular yet as we can't find any in some states.
Here's a list where you can find Coin Deposit Machine: LET'S DO SOME SAVING EVERYONE!