When I was young, my sisters and I were expected to be independent with our snacks (well, we were expected to be independent with everything), so as a result, we became very inventive/creative/desperate. Our mom didn’t keep much junk food in the house (thanks Mom), but my sisters and I could do a WORLD of things with toast—We’d top it with peanut butter, jelly, honey, or my personal favorite-cinnamon sugar. Sometimes we would combine several toppings (peanut butter and banana, cream cheese and jelly. How many can your kids think up?)
Actually, there are a lot more healthy things now to top off a piece of toast than there were when I was young–sunflower butter, almond butter, Nutella.
My point here is that there are many simple snacks your kids are fully capable of preparing on their own at a very young age. Resist the urge to cater to their “I’m huuungry” pleas, and encourage your kids to come up with new ideas for snacks they can create on their own. It will encourage creativity, initiative, and independence.