1) Cook and drain angel hair according to package instructions. Toss with butter and some grated parmesan cheese.
2) Drizzle tomatoes and basil with olive oil (optional) and a pinch of salt.
Be sure to have a cold pack on or in the bento box to keep ingredients cold.
If you want to keep the angel hair butter pasta warm, heat it up and scoop it into a small thermos for hot storage.