We really enjoyed Frank Lloyd Wright's home and school, "Taliesin", in Spring Green, WI. Heading NE from there across the center of the state, there many cheese shops along the road. Just look for the billboards. Small town grocery stores usually carry locally made items, too, and happily make recommendations and many times have samples.
If headed to the UP, check out Whitefish Point for some interesting maritime history. Lake Superior can be ferocious and there are many shipwrecks around Whitefish Point.