Kids shoot free throws
You have all the kids except one line up on the baseline. The other person shoots a free throw. If he misses the players run to the other end of the court then run back. The first person back is the next shooter. You keep doing this until a kid makes 3 foul shots in a row or when the whole team has shot.
At least 5
This basketball drill is licensed under a Creative Commons License. This drill is from Pål Degerstrøm at www.degerstrom.com/basketball.