The key to making meal prep less daunting for me is definitely to make it interesting with variety and having a system. I plan 2-3 types of meals that can be mixed and matched so that we don't get bored of the same ol' food every day.
For example, I'd bake several portions of chicken breasts seasoned in different styles -- BBQ, Mexican spicy, and lemon pepper. Each style gets packaged up in separate containers. Then, I'd cook a huge batch of brown rice and another of quinoa. With these staples done and portioned out, it's an easy matter to grab a protein and grain, heating them up and throwing together a decent meal without much effort.
Using frozen veggies also ensures they don't spoil quickly and offer different nutritional options. I get the girls involved in the preparing and organizing too, which makes the whole process more fun and goes by much faster!