All players have a ball each.
The catchers have to try and touch one of the players without bibs. If they succeed in doing so then that person has to stand still and put their ball on their head.
People that are standing still (stuck in the mud) can only be freed by someone going through their legs.
Note: All players should be dribbling whenever they are moving (improve handing and ball confidence).
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.