Dead easy and quick, make scrambled tofu. Just mash it up with a bit of turmeric and soy sauce, then heat in a bit of oil. Its also good with mushrooms (fried for a minute or so before heating the tofu) or spinach, or parsley / other herbs / spices etc.
Then serve on toast or baked potatoes, with ketchup.
Or tofu enchiladas. I've not got the exact recipe, but its something like cut the tofu into cubes, then coat with a mixture of flour / paprika / chilli powder. The fry up with whatever vegetables you want (onions, pepper, carrot etc) then put in tortillas.