One money saving tip that I haven't adhered to is that of not feeding a vending machine for snacks, especially at work. At $8.00 an hour, working between 4-6 hours a day, spending a couple of bucks for a soda and a snack costs me a quarter of my hourly wage.
Therefore today my lunch consists of a homemade sandwich, a butter bowl of microwave popcorn, and a bottle of purchased iced tea. I could reduce the cost of this by making my own air-popped corn and my own tea.
There are things I can't control, such as the economy, but I will endeavor to control that which I can and if I can't earn more money at least find ways to save what little I do earn.