I'm a busy mom, too. Here's a few practical suggestions for cheap and quick hearty meal ideas:
You can make a giant bowl of hearty salad fairly quickly. You wash and place your salad greens in the bowl, then perhaps add a some chopped carrots or bell peppers, baby tomatoes, avocado, or whatever you have. Toss with salad dressing and serve with whole grain bread or pita.
I don't recall seeing the brand, 8th Continental Light soymilk... I like Silk (the regular kind) for my chai tea and sometimes with my cereal--despite the fact that corporation, White Waves, owns the brand.