I know you said no bolognaise but the first time we eat it with pasta, the second time I make Ziti from it so layer pasta (we use penne or fusilli) into a lasagne style oven dish, then layer sauce, then push in some torn basil leaves into the sauce, you can add cheese at this point, then layer again, finish either with just cheese, or tortilla chips/crisps then the cheese, a drizzle of oil then bake it in the oven.
Same for chilli, first time with rice, second time make nachos, layer tortilla chips, chilli sauce, jalapenos if you like things spicy, you can always just add this to one side for the adults, layer with cheese, bake if making several layers, grill if one layer, serve with salsa, guacamole and sour cream.
Definitely check out Batch Lady on YouTube, full of ideas.