Materials:
red, green and yellow yarn
black construction paper
red, green and yellow yarn dots (I used 3/4" color coding dots from Office Depot)
glue stick

Directions (before the kids arrive):

1) Cut the yarn in to 36" lengths.

2) Gather the yarn into triple strands (one red, one yellow and one green for each child.)

3) Cut the black construction paper in strips. (I used 9x12" paper so I cut the 12" side into 2" strips. Each strip was the 2" wide and 9" long.

4) Fold each black strip in half to make a tent. (Now it's 2" wide and 4 1/2" tall.)

Directions (after the kids arrive):

5) Put the yarn inside the black paper "tent." Make sure that 18" of yarn extends out on each side.

6) Rub glue on the inside of the tent. Then press the paper tight so the glue holds.

7) Place a green dot, a yellow dot and a green dot on the black paper. Green is Go! Yellow is Slow! Red is Stop! Now you have a traffic light!

8) Tie the ends of the yarn into a bow. Now put the bow over the child's head. It's a traffic light necklace!