Ages 2-3 Children from a young age are fascinated by a lot of neat things. While they won't likely remember these birthdays at such a young age, this is a really fun time to watch their little minds get blown by getting to explore different activities. Petting zoo party Train-riding party with a picnic at the end Obstacle course party at the park Summer carnival party Kiddie pool party Backyard tea party Mermaid/under the sea party Animal/safari party Summer rainbow party Backyard beach party Image Source: Flickr user Karen Kuo