Thanks so much for the great ideas! I may have insinuated that I was a bit healthier than I really am though

We're all picky eaters, so while I have tried my hardest to like hummus and cottage cheese, I just can't get past the texture! I have learned to eat lots of vegetables over the years, so I'm getting better. Even so, I have a long list of ideas now, and I'm going to ask a few relatives who never throw anything out if they have an old air popper... my kids would love popcorn every night, I have no idea why I didn't think of that.
You are all so right about "mindsets" too... unfortunately, my mindset has been that a snack is something you grab out of a package and open, so I'll have to plan a bit more to have better things. I crave something sweet and salty each night, so after wandering around the kitchen for awhile last night I came up with edamame and then for the sweet I dipped peanuts and raisins in melted dark chocolate chips (I often buy chocolate covered treats from Whole Foods, but not in the budget now!) It was so good!
Another mindset that I'll have to change is how much choice to give the kids. They all eat so differently. When I cook, my motto is "Eat what you get and don't throw a fit!" so I've always let them choose their own snacks. But I do want them to broaden their horizons, so maybe just serving a few options will help them to do that.
I'll also look more at healthier cakes and cookie recipes too, b/c my DH is the pickiest of all and he will not eat fruit and stuff like that. I'm baking cupcakes right now for my DS5's birthday tomorrow, so I doubled the batch and will freeze them! I've never done that with cupcakes, hope they turn out well!
Thanks again for the ideas everyone!!!