Snakes : follow the leader
Split the team into groups (5 ? ) and start them at home in single file behind a leader with a ball.
The group does a specific exercise each time the coach blows his whistle hands , loop , miss loop , switch on the end , dummy switch switch , etc whatever passing exercise you wish them to do.
I make them arc left on the first whistle and right for the second ,and sprint home when the third whistle is blown.
On the coaches signal the group
jogs and follows the leader as he winds his way around the area changing direction.
On the first whistle the group arc out sprinting onto the ball (
see fans for this part of the exercise) and do the prescribed exercise then form up behind the new leader and start jogging and following the leader.
On the next whistle they arc the other direction and form up behind the new leader and then on the 3rd whistle they spint home

Extension:
at the end of the passing arc the player with ball sprints ahead and places the ball and turns to become a defender against the rest of the group who do another drill eg 2v1 , contact rip pop , deck clean out etc , the player who ends up with the ball is the new leader and the group falls in behind him and jogs waiting for the next whistle.
Drills
Contact bag shuttle:

Set up group as per diagram with one player holding contact bag.
0 has bag and x1 moves forward and hits and drives bag for 3 count then takes bag from 0 and moves forward to x2 .
0 joins back of line he was moving towards.
x2 hits bag drives then takes bag from x1 and moves forward to next player .x1 joins group he was moving towards , drill continues....

Extensions :
if amount of bags or work rest ratio is a problem put a marker out to the side of the drill and get the person who leaves the bag to sprint around it before joining back of their line.
You can also turn this into a rucking drill by putting two bags together and go two at a time.
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