I always try to decide what I'm going to cook for dinner the day before. That way, if there is anything I need to put in the fridge to defrost, I can do that and it will be ready by the time it is time to make dinner (larger pieces of meat I may sit out two days before). I already usually have a list of dinner possibilities that I can make, based on different things I recently got at the store, and so all I have left to do is pick one off of my list for the next night. Sometimes...I realize that I am missing some essential ingredients or something else comes up. At that point is when it is good to have things that you usually keep on hand, and things stuffed and saved in the freezer.
I recently had one of those days.
I found some refrigerated raviolis that I had put into the freezer to save. I always have several types of shredded cheese in the fridge and at least one jar of pasta sauce in the cabinet.