Michigan's Upper Peninsula is represented in a new business venture from two NMU students - Darren Young and Brian Emigh. The two took an entrepreneur class at NMU and were inspired to start a business involving custom longboards (like skateboards only longer and more stable). The wood for the longboards is from local maple trees and the sand used for grip on the boards is from the shores of Lake Superior. Young dubbed the sand "Superior Grip." Their business name is Presque Longboards - an homage to the area they are based in (there's a Presque Isle Park just up the road from NMU).
From a guy that runs a business that features only products from Michigan - I've got to say I love this idea and concept. I wish Darren and Brian all the best in their endeavor.
Visit their site at PresqueLongboards.com