When I joined SP I stopped eating out at fast food restaurants for lunch every day. Now I "buy myself lunch" by packing a healthy lunch and snacks, including drinks in a cooler that I hide under my desk and I put the cost of my old lunch in the bank every payday.
A fast food meal costs$3.00- $7.00 each time. I average that out to $5.00 daily and put $50.00 minimum in savings every 2 weeks. This fall I'll be using my "lunch money" to go back to college.