Beef and Black Bean Tacodiles

Name: Beef and Black Bean Tacodiles
Ingredients: 1 tablespoon vegetable oil; 8 ounces ground beef; One 15-ounce can black beans, drained and rinsed; 2 teaspoons chili powder; 2/3 cup salsa; Kosher salt; 8 flat-bottomed taco shells; 1/3 cup sliced black olives, plus 4 black olive slices, halved for eyes; 1/3 cup sour cream; 2/3 cup finely shredded iceberg lettuce; 1 plum tomato, diced; 1 avocado, peeled, pitted, thinly sliced lengthwise and halved crosswise; 1 green bell pepper, cut into strips for 16 legs and 4 tails