In an Eat Street space that used to house a German bakery, Arwyn Birch and Teresa Fox have made their own mark on the culinary scene in Minneapolis; the vibrant, pink-ceilinged Glam Doll Donuts sells about two dozen different types of doughnuts, including a new one every Wednesday, and they craft custom designs for special events. Among the secrets to their success has been enthusiastic outreach to the local music scene, which has responded with lots of goodwill and countless social media shout-outs.