A Very "Michigander" thing to do - Corn Mazes and Cider Mills
In the fall time a common activity among student organizations and club is to check out a cider mill (eat apple cider with doughnuts) and do a corn maze (I've heard haunted corn mazes are cool, but I enjoyed a regular corn maze too). This video actually comprises of several different places. I would recommend Dexter Corn Maze and Spicer Orchard.