For young kids, some good after-school activities include:

Sports teams or individual sports like soccer, basketball, tennis, or swimming.Dance or gymnastics classesArt or craft classes.Music classes.Karate or martial arts classes.Libraries reading programs and homework clubsScience clubs or experiments,Nature and outdoor activities like hiking, gardening, or camping.Cooking or baking classes

It is important to consider the child's interests and abilities when choosing an after-school activity, and also the activity should be appropriate to their age level. These activities not only provide fun and physical activity, but also help young children develop new skills and gain self-confidence. Additionally, it's important to consider the child's physical and mental well-being and make sure the activity is not too demanding or stressful for them.