Here is a simple ghost game using stuff from around the house. Make some tissue ghosts - three cotton balls under tissue, twist tie close and draw eyes and mouth.
Hide the ghosts indoors or outdoors. On go see how quickly you can find them. We made two teams and whoever found three first was the winner. The winner hid the ghosts for the next round.
Simple game for a wide age range. We played with 3-9 year olds. Also, a good short burst of much needed physical activity after a long school day.
Have fun being a ghost hunter!