I know most of the Korean moms here already know this but for those that don't, if you're ever looking for something to feed your kids, kim and rice is the ultimate Korean kids meal. Kim is dried seaweed. (Make sure you get the Korean brand and that it says "seasoned").
Every Korean kid grows up on this stuff. It's perfect because it's nutritious and quick. All you need is rice which most households have already. Best thing of all is that the kids love it!
The great thing about this is that it doesn't need to be refrigerated and has a decent self life. Plus it's cheap.
You can always add some chicken or beef to it for protein and it becomes instant kimbap.