Line up in these positions. Then start off 3 on 2 on one end until the offense scores, shoots 2 times or the defense rebounds. Whoever has the ball at the end of one of the scenarios outlets the ball to one of the outlets closest to him. Then they go 3on2 and repeat the same
Offense
Defense
This drill is a conditioning drill and is a good warm up that works on many different things.
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.