On the cooking one, I also recommend cooking double portions when you can. If you can cook twice as much with minimal effort, that's half the cleaning you have to do afterwards and half the meal planning you have to do. You get up in the morning and know that you have leftovers from dinner ready to go for lunch in the fridge. Also, rice. Rice is cheap, good for you, and incredibly flexible in what you can do with it. A rice cooker is also a great appliance to have in general. Not only is it an easy set and forget for a pot of rice, but you can do all sorts of meals in it from steaming meats and vegetables to cooking soups and even baking desserts. An air fryer is similarly flexible and great for making meals for one person. You don't have to preheat it or anything and it doesn't cost all the energy that a full size oven does.