Mama Castner's alley :)
Over on Come Together Kids, Laura has a great idea for some activity inspiration (as well as a really great Fall decoration). Make a list of the activities you'd like to do in the Fall, frame it up, and use a dry erase marker to check the items off (so you can re-use it next Fall).
I love this, and as Austin gets older I definitely plan to do things like this. Check out Laura's post here.