2 players with one ball, 4 cones.
Player 1 chest passes to player 2 and then turns and runs diagonally to the first cone, touching it before returning to the starting spot to receives the return pass from player 2.
Player 2 does the same as player 1.
The second time round players run diagonally to touch the opposite cone.
Progression:
Change the type of passes your players are using - bounce, lob, javelin pass.
Get your players to jog backwards to the cone, keeping their eyes on the ball at all times.
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.