Also, try to put the categories in the same order that your store has them (by aisle). That makes it quicker to find the items you need!
Dairy
Dry Goods
Frozen
Meats
Produce
Sauces and Soups
Snacks
Beverages
Cleaning
Paper Goods
Laundry
Health and Beauty
Pets
Baby
Adjust this list to fit your personal needs and to make it more specific or less, as you prefer!