Divide the girls into 2 equal teams and get each team to stand in a line, facing the front.  Make sure that there is a large space between each team because the girls will be running down the middle.

At the front and back of each line, place a chair.  On the front chair, place a pen.  On the back chair, place a pencil.

Give each pair standing side by side a number.

Shout out a number and either Pen or Pencil.   The girl who has that number has to run to the chair with the object on that you have just shouted and pick it up.  She then has to swap it with whatever is on the other chair and then run back to her place.

The first girl back wins a point for their team.

NOTE: The girls should each run the same way i.e. anti-clockwise.  They must always run around the chairs, even before they return to their place.