First thing that I would say is to take a look at what snacks that you regularly have on hand. Now that you know what they are see if you can find clone recipes for some of them or find something close to that. If you guys like fruit you can stock up on it when it is on sale.
If you can’t do that than you might consider easing in more homemade snacks while cutting out the store bought ones. I know that I need to make some snacks since it feels like there is nothing to eat but my freezer is full and so is my pantry….I hadn’t noticed them filling up again and I only spend $60 a week for 4.