Unroll the crescent rolls and slice along the perforated lines. Slice each of the 8 full-size triangles in half to create 16 small triangles. Trim any jagged edges.
To roll each blanket, place a cocktail wiener at the base of one triangle. Roll the sausage and the dough towards the tip of the triangle, forming a croissant around the sausage. Place the tip-side down on a baking sheet. Repeat with remaining dough and sausages.
In a small bowl, mix together the melted butter, chopped sage, chopped rosemary, thyme, and garlic powder. Brush the mixture liberally on the tops of each rolled sausage, then place in the oven and bake until golden brown, about 10 minutes.
Remove from the oven and sprinkle with sea salt while warm. Serve with your favorite dipping sauce.