Chicago's Sonnenzimmer is a collaboration between Nick Butcher and Nadine Nakanishi. Part print shop, part art studio, part design firm, Sonnenzimmer approaches every job with a steady and and a unique eye. Their unusual style--a mix between handmade color play and the less-is-more aesthetic of Swiss modernism--has built a small but dedicated following to the studio. In this Shoestring portrait, Nick and Nadine talk about the the power of collaboration, the struggle to break even, and the importance of independence.