Need any and all ideas for things to see and do in Michigan

A place that is a winner in our book is going north out of Petoskey is a winding narrow road (don't do it in your unit), I think the locals call it the tunnel road because the trees make it seem like a tunnel. It goes up to Cross Village. In this little place is the "Leggs Inn" restaurant. Open during the summer for lunch and dinner. Famous for their Polish cuisine but they have a great menu also absolutely delicious. If you stay at Mill Creek CG it is maybe a 20 to 30 min trip to have dinner. We did the road during daylight then went back for dinner in the evening from Mill Creek CG. We really enjoy Mill Creek. Be aware that in Michigan State Parks if you're in a motor home with a towed, they charge a fee daily for the car and the motor home even though the MH never moves from it's spot. They don't do it to trailers. Michigan is full of great private CGs Another of our favorite is Sleeping Bear federal campground but make reservations now.