These are really good tips!
My favorite healthy alternative recipe is mashed veggies instead of mashed potatoes. I mash boiled cauliflower, carrots, potato, pumpkin and broccoli together. You can adjust the amounts of these different vegetables depending on how your kids like them. It's a great way to get some extra veggies in their diet.
Something else I do to make a healthier, less fatty, less sugary cake is to use flavored milk, fruit yogurt or pudding instead of frosting. I actually buy pre-baked cake layers sometimes when I'm short on time. I use strawberry milk or chocolate milk to moisten the cakes and then put pudding or fruit yogurt between the layers and on top as frosting. Finally decorate with fruits. It is so tasty and the kids don't have to have all that excess sugar.