It's super easy to make a cute shamrock design to top your cupcakes or cookies. Three green m&m candies and a tiny green frosting stem make a simple shamrock. You can use a tiny bit of frosting to stick the candies on top of cookies without frosting the whole cookie.
St. Patrick's Day Countdown by Salina Yoon. This rhyming book is a good introduction to St. Patrick's Day for the youngest leprechauns in your house. I recommend this book for toddlers and preschoolers.