First, decide whether you want to bring hot, cold, or room temperature items. From there, you need to assemble the right equipment. Ever since I got my first job in high school, I have been collecting various meal containers and lunchbox systems. My favorites include:
Laptop Lunch Box (purchased from the manufacturer)

Tupperware Meal Solutions to Go Pack (purchased from Amazon)
Or simply your favorite food storage containers! (these purchased from Ikea)
Vegetables: carrots, sliced crudites, low-sodium V8, veggie sandwich toppers, small salads
Fruits: choose your favorite! Most fruits are easily transported with or without refrigeration.
Protein: Hummus, bean dip, frozen veggie patties, Tofurky, soynuts
Fat: Trail mix, nut butters, tahini or oil-based salad dressing used as a dip, olives for salads or sandwiches
Grains: whole grain bread, bagels, wraps, pitas, crackers, cereal
Dairy/Calcium Source: string cheese, boxed soymilk


Assembly of the above ingredients is entirely up to you and your creativity. Here are few that work well for me and my lifestyle, in terms of ease of transport and consumption:
Snack mix (with cereal, dried fruit, nuts and/or soynuts)



Whole food bars (such as Larabar or Vega Vibrance bars)
These are the guidelines I use to make sure I don't have to rely on the vending machine for dinner (sadly, Twizzlers, do not qualify as a balanced meal).
I hope you find this post useful, and enjoy your evening:)