Rules:
Have all the children form a circle.
Give one child a ball of black yarn to start the game.
Have each child toss the ball of yarn to the child opposite them in the circle.
Make sure they hold onto a piece of the yarn before they toss the ball to their opposite.
Pretty soon they will create a giant spider web of yarn!
Alternative Spider web game: (for outside - or brave hosts!)
Give each child a can of black or orange silly string
Have all the children form a circle.
Have each child spray directly toward the child opposite them in the circle.
Pretty soon all the kids will be tangled up into a giant spider web!