I like reading all of the responses 
My hubby grills quite often so if he makes steak, he makes extra. We slice it up, freeze it for later in the week and then we have steak salad with cherry tomatoes blue cheese croutons and romaine lettuce - I add sunflower seeds or other veggies if I have them. It makes for an easy dinner.
We do the popcorn or cereal thing as well. Sometimes we have breakfast for dinner, eggs or breakfast sandwiches or french toast.
Today earlier I had avocado toast with sliced cherry tomatoes. I don't need much to fill me up.
Always try to cook enough so in a few days or a week from now you have enough to thaw and eat again (bake two meatloaves, make double the sloppy joe mix, etc.).
We never eat the same thing two days in a row - keeps dinner from getting boring.
Finally, we buy a good frozen pizza from our area - cheese pizza and then doctor it up with bits of sausage, some pesto, mushrooms and whatever else you like.