Will you be eating eggs? cheese? milk products?
If so, quiche would be a great dinner. Or, you could make a southwestern breakfast casserole with eggs, cheddar cheese, salsa, black beans, sour cream, olives.
Nachos! Refried beans, homemade salsa, cheddar cheese, jalapenos, olives.
Baked potatoes topped with chili and cheese.
Grilled cheese sandwiches with soup.
Boca burgers are a pretty good veggie product. My favorite way is on buns with all the fixins'. Some people use the patties and crumble them into chili, but personally I don't care for that.
Pizza! You could make a unique flavor to try to detract from the fact that there is no meat. We like to use BBQ sauce for the sauce. TJ's makes a really good, smoky jalapenos one. Top with peppers, red onions, black olives, cheddar cheese.
Stir fries have lots of different flavors and you can pick whatever veggies you like.
I would suggest trying to make different recipes instead of trying to make your usual meat recipes with meat-free substitutions. Otherwise they will be doing a direct comparison. Now, if it's a completely different recipe they can simply enjoy those new, fun, delicious flavors instead of looking for the meat.