Great job!
I have some hypoglycemia, so I make sure that there are always snacks around and I also know exactly what I should get at a 7-11 or whatever. (I can usually, but not always, resist the 99% of 7-11's products that are total junk.)
Lately, my emergency food as well as my every day snack is Mr. Nature brand trail mix. I buy them in bulk on ebay, keep a bunch in my desk at work, a couple in my glove compartment, one or two in my backpack, and a gazillion at home.

So it sounds a little crazy, but I'm never without a healthy, filling snack.
It'd be much cheaper to make my own, but I'm lazy and these are already pre-mixed and -portioned.
Other possibilities for me are protein bars, which aren't filling enough, whole wheat matzo and cheese, eggs if I have the time, etc.