Here are some interesting lighthouses in Michigan which Harbour Lights has not yet made:

Saugatuck (Kalamazoo River) Light (a lost lighthouse on Lake Michigan)

Beaver Island (S. Beaver Head, Lake Michigan)

Ontonagon (Lake Superior, Upper Peninsula)

Hopefully, they could be made in the small size (This Little Light of Mine) since they would be much more affordable and take up less space.