Make St. Patrick's Day extra special for the kiddos! I purchased green Crayola bathtub finger paint soap from my local dollar tree but I have also found it at Walmart. On a smooth service (I chose the bathroom sink) make little green footprints to create a Leprechaun trail! Since it is simply just soap you could pretty much do this anywhere and clean up is incredibly easy. It comes right off with the quick swipe of a paper towel.
Have fun and Happy St. Patrick's Day!!