Use sirloin or another tender cut of beef for best texture; avoid tougher cuts. Don’t over-marinate shrimp to prevent mushiness. Cut all vegetables and proteins into similar-sized pieces for even cooking. Soak wooden skewers in water before grilling to prevent burning. Preheat grill well and let kabobs rest after grilling for maximum flavor. For indoor cooking, use a grill pan or broiler and adjust cooking times. Variations include swapping proteins, adding different vegetables, spicing up the marinade, using fresh herbs, or glazing kabobs during grilling. Leftovers keep in the refrigerator for up to 2 days; reheat gently to maintain texture.