I think a whole subreddit dedicated to it will probably have more ideas, but yeah, I used to do this a ton. When I was single it just made sense economically and time wise. I'd make a week's worth of food, all meals, on Sunday and at most my prep during the week was 10min. You can even make huge batches ready of to scramble eggs. Put them in one of those big plastic dispenser bottles, melt butter in pan, sploosh in some eggs, cook, eat. The sheer number of things you can freeze literally ready to go in the oven or sous-vide is pretty insane as well. Cookies, pies and tarts of all kinds (fruit ones imo are actually better this way, as the punctured cells from freezing end up making the flavor better overall), I have half a dozen types of fish, pork loins, steaks, etc., that I prepped completely than froze. Put them in the sous-vide an extra hour to give them time to thaw and then cook, sear, eat. That part is easier for me since I work from home, I can just pop them in a couple of hours before the wife gets home and we can do the sides together.
There are honestly so many tricks for this and a lot of it comes down to what you eat, what you want your diet to be like, etc.