A pleasant drive and one that we have done is to take Hwy 2 across into the Upper Peninsula of Michigan. Along the way plan a stop at Fort Peck, Montana which has a beautiful campground. You'll have an opportunity to see some of Lake Superior and Lake Michigan. Head up to the Great Lakes Shipwreck Museum at Whitefish Point just north of Paradise, Michigan. Lots of neat history. Along the way you could also make a stop at St. Ignace or Mackinaw City, Michigan and from either place take the ferry for a day trip to Mackinac Island. (Yes, there are two different spellings of these but they're both pronounced Mackinaw.)