Although shopping isn’t a huge activity here, Mackinac Island  does present a few unique browsing options. The Island Scrimshander (906/847-3792, www.scrimshanders.com , 9 a.m.–4 p.m. daily May–Oct.), for instance, offers amazing engraved trinkets.
You should also check out La Galerie (906/847-6311, 9 a.m.–4 p.m. daily May–Oct.), with its line of Pandora Jewelry and Christopher Radko Ornaments.