Hand quickness and reaction drill.
Have a wide stance, holding the ball with 1 hand in front and the other hand behind.
You will let go of the ball and switch hand positions.
Keep doing this and gradually try to build up the speed.
Four players standing still make every ball handler's job harder. Teach V-cuts, L-cuts and back cuts so your team gets open and punishes defenders who overplay.
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.