One thing I do is purchase White Rain hair conditioner at the Dollar Store and use that to shampoo my hair. A $1 plastic bottle lasts about a month, using it daily. What I discovered is that shampoo actually irritates my scalp. Before switching to conditioner only, I had itchy bumps (almost like acne). Some conditioners contain the irritating ingredients; White Rain is a safe choice and saves money too.
We rarely eat red meat anymore. This was a health and environmental choice, but it does save us quite a bit at the grocery store. We vary homemade meals among fish, chicken, and vegetarian choices.
It helps a lot to cook from scratch. We rarely buy cereal; dh cooks his own oatmeal (from the large cannister) for breakfast. If we ate more bread, I would make homemade bread once a week. Coffee is my expensive vice. I buy coffee beans from Sam's Club, grind it daily, and make a thermos of coffee for myself a day. Tagged the coffee beans once, and figured it costs about $1 a day. Even McDonald's coffee is expensive compared to my homemade.