Arrange the relay teams in files behind a starting line, facing front. A turning line is marked 5 metres in front of the starting line. Give the front player of each team a ball. On signal, the ball is rolled on the ground (Using one hand) to the turning line and back to the starting line. Then the next player does the same.
Ball
6-10 players per team
Make sure to explain rules clearly before starting. Divide players into equal teams for fair competition.