Create a healthy snack drawer for the fridge. Toss in pre-packed snacks to go for the whole week. Also, pre-packed snack bags/containers for the pantry with non-perishable things like pretzels, mixed nuts, unsweetened cereal, etc.
I do a lot of these already. but its a good reminder! Before heading out for groceries -- 83 Cheap, Healthy Foods for Meals in Minutes (first half of list is LC before they get into grains and sweeteners - almost a grocery list!