Mexican-style vegetable skewers are a fiesta of flavors and colors. Start by marinating your choice of vegetables, such as bell peppers, red onions, zucchini, and cherry tomatoes, in a mixture of lime juice, olive oil, minced garlic, chili powder, cumin, and a pinch of cayenne pepper for some heat. Let the vegetables marinate for at least 30 minutes. Thread the marinated vegetables onto skewers, alternating the different types for a vibrant presentation. Grill the skewers over medium-high heat for about 8-10 minutes, turning occasionally, until the vegetables are tender and slightly charred. Serve the skewers with warm tortillas, guacamole, and salsa for a delicious Mexican feast.