Mandy,
Watching the ads, especially food ads can save you money. Things that I use regularly I stock up on when they are on sale.
Also some stores are cheaper than other ones. We don't have a Walmart around here, but Trader Joes is cheaper than grocery stores on some things and is where I buy most dairy products. I also tend to shop at Costco, some of their things are definitely cheaper than regular stores.
Cooking from scratch is cheaper than convenience products too. Sometimes I like to make a big batch of something and freeze it or enough for more than one night. I personally don't like to have to cook dinner every night.
Depending on spending habits, take a close look at what is a necessity versus a luxury. Unfortunately things like ice cream, one of my favorite treats, really are a luxury and not a necessity, not only money wise but calorie wise too.
The another thing I do to save money is keep the house on the cooler side during the winter and wear a sweater or sweatshirt in the house. During periods when it is colder and I have the heater on more, I see a definite increase in the heating bill. Around here we don't have air conditioning so I don't have that cost during the summer.
Those are some of the things I do to save money. By saving money it gives me the choice to spend it on other things.
This year I need to watch my spending as every month I'm putting money into the account for my daughter's wedding next July. Even a "low budget" wedding is expensive.
Happy saving,