In fours play this first to make 10 points game.
Players stand in various positions (in front of the basket, to the right and to the left). Use cones to mark three spots.
A 4th player assists with returning the ball after rebounds.
The coach can blow their whistle after a minute has passed and all players should move clockwise to the next cone (or under the basket as the rebound returning player).
By playing this game for a minimum of 4 minutes it allows all players to have an equal go at shooting from all three positions.
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.