Here is a fun outdoor activity for preschool students. Fill paint cups about 1/2 full of water. Give the students a water cup and a paint brush. Have them paint the fence on the playground with water.
This is a different fun activity for them to do on the playground. It is something different to do other than the usual of climbing on the equipment or throwing and kicking balls. Many preschool students love art. Painting the fence with water fulfills this love of art without making a mess of the playground equipment.