Last of the Autumn Leaves: Leaf mobiles/sun catchers (project page also shows some awesome suncatchers) This is just the idea I had.
9 FUN outdoor math activities for kids - so many great learning activities for preschool and kindergarten age kids for summer Frugal Summer Activities, Summer Kids Activities
FREE fall songs and rhymes for circle time. Apples, leaves, scarecrows, etc.
Learn with Play at Home: Make your own simple backyard Mud Kitchen.Looks better than our Nursery mud kitchen!