If you're a parent looking for a way to motivate your children to stay fit, then the Fitbit Ace 3 Activity Tracker for Kids could be the answer. It's an activity tracker designed for kids ages 6 and up, and provides them with a variety of features to keep them engaged and having fun. Kids can create personalized avatars, and as they exercise they can earn virtual badges and animated clock faces, which change throughout the day as they progress towards a daily goal.