Tins of tomato's - great to throw in stews, slow cooker, pasta etc
Chicken noodle soup in the packet - salt reduced, my kids love it and is great for a filling meal with bread and butter when I havent had a chance to cook
Tins of tuna - for toasted sandwiches or in pasta
Mixed Beans- easy for a salad, add some chopped coriander and red onion
Pasta
Burrito Pack - easy dinner
Frozen pizza bases - super easy meal and kids love em! Can hide lots of vegies too under tomato paste and cheese!
Rice - Good for bulking up stirfries etc

Umm cant think of anything else atm but hope that helps.