First of all you could tell your aunt to stop sending them (at least until you've eaten what you have.) Second, you could start adding things to the mac and cheese so it's not just the same old thing. There's a recipe for pizza macaroni and cheese, chicken ranch mac & cheese, toss in different cheese and/or noodles with it, turn it into a casserole with Italian meats and spices, make mini snack bites, throw jalapenos and bacon into the mix, you can even throw cheddar cheese with hot sauce onto it. Knowing which foods your family likes you could start with that or something in that food group to mix up the mac and cheese.