I serve foods along the lines of Jenn and dodge by the sounds of it. I give fruit at almost every meal and snack but I need to get better at serving veggies. My kids have always ate veggies in stews, soups, chilis, etc but I have only ever had one who liked them raw. I don't serve veggies with dip but may try serving it with hummus or something like that.
Superfun, I am not sure if hot dogs are ever really "healthy" but nothing beats a hot dog cooked over the bonfire....go on and splurge!! lol

Crap food in moderation isn't the devil....IMO haha
Other ways to save money....
1. Do you supply the sunscreen? If you do, can you ask the parents to start or to at least pay for what you buy (I ask this because I just buy it out of pocket...well not really. I feel my fee covers it)
2. Do you buy/make gifts for special occasions? If you do, can you cut those out? (again, I ask because I do a lot of gifts and if I needed to save money this would be one of the first things I would cut out)