I also freeze leftovers. I have a bowel I keep in the freezer for veggies for soups. 1 spoon of corn here, a spoon of peas there over a month adds up and you will soon have a bowl full and not out any extra money for a package of mixed veggies.
Also Make your lunches and freeze. save the smart ones or healthy choice freezer containers, fix your own and freeze.
we by bottle water but we have started rinsing and reusing. Dr oz said just rinsing in hot water is fine. Then we add crystal light packets. I also take the packets with me out to eat. Water is free and then you add the paket and its alot cheaper than a pop.