I'd hate to see you backtrack on the way home. Cut across the top of Wisconsin (hiway 8 or 29) and you're bound to run into a Brat festival in one or more of the small towns. Drop down through Green Bay and take a look at Lambeau Field. From there head to Manitowoc and take the SS Badger car ferry to Ludington, MI. Head SE toward Toledo, OH (stop at Cabelas in Dundee) then 80 East to Cleveland and South on 77.