Food for work.

I always pre pack a salad and fruit. Mandarin oranges and strawberries were always the best. Otherwise protein bars. My leftovers from dinner

There's a whole thread on bento lunchs in the recipes section. Even if you don't care about bento, there are pictures so you could get some ideas on things to pack.

I try to make a big batch of rice and beans on Sunday and divide it into lunch portions in Tupperware. Then i can just grab one Tupperware plus a few snacks (usually 2-3 of the following: apple, string cheese, carrot sticks, pretzels, almonds, yogurt) and lunch is ready to go in 2 minutes.

The beans i make usually involves some variation of: sautee chopped onion, bell pepper, whatever other veggies are around, some hot pepper if you like spicey stuff. Then add a drained can of diced tomatoes and herbs/spices like cumin, cilantro, garlic powder etc. Sometimes i add drained canned corn too. Then add a can or two of beans (either drained and rinsed from the can, or dried beans that you've already cooked), and maybe a can of refried beans to add a creamy texture if you like that. Cook at least until everything is heated through, but it can help to cook for longer to develop the flavors. The amounts are really flexible here, just mess around until you like it.

Rice and beans happens to work well for me but there are lots of things you could make ahead in batches: Turkey meatballs, chilli, fried rice with tofu...just a few off the top of my head

I do leftovers for lunch. I've made those chia pudding breakfasts from Pinterest, but I put protein powder in them. I take fruit, protein bars, extra veggies for snacks.