The coach starts with the ball on the top of the 3 point line. Blue player 1 has to try and get free from his defender before receiving a pass from the coach. They then play 1 v 1, after the game has finished the ball gets thrown back to the coach for the other side to repeat the practice.
Good team defence is five players guarding the ball, not five separate one-on-ones. The shell drill is where that starts, so here is how to teach help-side positioning and rotations from the first week of the season.
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.