Usually on my grocery list are
Lots of crackers - i.e Whole Wheat Goldfish, Funshine, Ritz, Animal crackers etc
Fruit - usually always bananas, apples and watermelon and strawberries depending on price
Cucumbers - every week for sure
Corn - either frozen or in a can. The kids love it in their food
Yogurt

Then for meals it is a lot of leftover home cooked meals.