My husband makes a big batch of beans and brown rice on Sundays and takes beans-and-rice every day with whatever appetizing leftover we have on top. Has for the nearly 30 years I know him. If there's nothing, he'll fry an egg and throw it on top.
Years ago when we lived in the US he worked in a place where a food truck came around at lunchtime. Most of the guys he worked with would buy meatball subs and other delicious goodies every day, but a friend decided he was spending too much money with a new baby on the way and that he would also bring lunch. Made two peanut butter sandwiches every day. The man lost over 100 pounds ultimately, because he felt so good he started running road races, and apparently saved big money.
For years I lived in a place where I either had a cafeteria onsite with free food or a convenience store around the corner where it was cheaper to buy food than make it at home. But I also worked for years in a program delivering lunches to the homeless when I lived in Japan and that lunch, what we made every morning and delivered at lunchtime, is probably my favorite lunch to bring if I need to go somewhere, and I could eat it every day-- two rice balls with a boiled egg. The type of rice can vary, the balls can have filling or not, there can be nori (or cabbage, or collards, or spinach) to wrap them in or not, there can be stuff to dip the egg and rice balls in or not, it's all good. And if you have an apple for dessert it's bliss.
