I only will stock up on certain things like canned goods, coffee,pb, lunch snack items just because they are on sale in the fall. Also I don't cook as much in the summer so stock doesn't get used up as much.
I will get extra milk and bread etc if the weather is suppose to be bad for the next while. We don't get really bad weather here plus we can always walk to the store.
Also I will make sure I have enough cat food and bird seed. I can only get our bird seed brand at one store and our parrots wet food at one other store. Cats eat science diet which doesn't really go on sale discounted enough to stock up on so make sure we have enough. nothing worse to annoy you then unhappy cats!