If you've got a toddler running around, you already know that little ones love to get their hands in everything, and if you're planning a birthday, chances are he or she wants to help with that too! While most toddlers aren't mature enough to help blow up balloons, write invitations or help bake the cake, there are a few ways that your eager little one can help feel like he or she is taking a more direct role in their birthday party planning. Here ar...