Buy bulk when it comes to food. A Sam’s Club/Costco card will get you enough food per month to live like an emperor. Buy a used car and have it fully paid off in one throw. Download music and burn cds. Download what movies you can and rent the rest. Figure out how to rip dvds onto your hard drive and return the disks.
I started buying large bags of white sugar, brown and powdered sugar as well as flour, over the course of several months, from Sams club. I do tons of Christmas cookie baking, so it really helped cut down the cost. I started buying ahead for the rest of the year too. It’s just nice to have the extra put back. I bought 5 gallon buckets from the local grocery bakery and store the dry goods in them. They are food-grade, cost me $1.00, and they have tight-fitting lids. Oh, and I made sauerkraut in one of those five-gallon buckets! YUM!
I make a lot of food from scratch - like spaghetti sauce from my own canned tomatoes and zucchini relish from my home-grown zucchinis. It saves money and I know there’s no preservatives. I made raspberry syrup from raspberries in my freezer from last summer. Makes great pancake syrup.
Anything you can freeze or can yourself is one less thing you have to buy at the store.
Steal, don't buy your next car. Wear an overcoat to the grocery store and stuff it full of steaks. Climb the utility pole outside your house and splice into your neighbor's cable feed. Watch for packages being dropped off around your neighborhood and grab them before the owner's get home; sell whatever is inside on eBay or craigslist.