Create 2 large squares, maybe split them up into boys and girls. Split them up in half, so if there are 12 boys, then 6 go on the outside of the square and 6 go on the inside of the square with a ball. The children in the middle have to keep moving with the ball and passing it to somebody stood on the outside. The child on the outside catches it and throws it back to the same person.
Get them to use different throwing techniques, such as underarm throw, overarm throw, slingshot throw. After a few minutes, switch the children over so the people on the outside get a go at running inside the area with the ball. Encourage communication to ensure the person on the outside doesn’t receive 2 balls at the same time.
Get the children in the middle to practice fake passes, pivoting and dribbling.
Rebounding is the least glamorous thing in basketball and one of the most decisive. It is also almost entirely a habit, which means it is entirely coachable.
Good spacing is only the start. The best modern offences teach players to attack the defence's rotations and play in a permanent 4-on-3 - here is how to coach that read.
The ball screen produces almost half of all professional offensive possessions, yet most teams still teach it as a memorised play. The modern approach trains the read - giving players a framework to decide based on what the defence does, not what the coach called.