Couldn't find a picture, back when my hubby didn't come home for lunch (he works close enough so he can now)
every now and then I would make a bit extra so he could take a bento lunch the next day.
The boxes we use is this rectangular shape divided into 4 compartments, and is see thru and microwave safe, that we got at daisho in wash, not pretty so to speak, but the pretty ones tend not to be able to be nuked
My hubbys favorite bento has some combo of teriyaki steak, panko shrimp or chicken katsu, charsu pork, gyoza and rice.
I know sounds like a lot of food, but what I would do is make 1 persons serving of 3 things and dived them between 2 dinners and 1 lunch