Mark a square accordingly the number of players.
Set up two smaller areas next to the playing field.
Each player with a ball is in the marked area.

Players dribble in the area.
The coach calls one color of the traffic-lights by turns Green, Red and Amber.
Players have to follow the coach's instructions, every color means a determined movement which are the following: Green: Players dribble around the area.
Amber: Players slow down and touch the ball between insteps of both feet.
Red: Players stop and put one foot on the ball. 

The coach can call instructions to lead the players change their pace at green light periods.
1st gear: Slow dribbling
2nd gear: Steady dribbling
3rd gear: Quicker dribbling
4th gear: Quick dribbling
When the coach calls "Service" the players have to dribble into the outside area as fast as they can.