With the financial crisis that the country is currently experiencing, one thing I'm urging friends and family to do is to consider growing some of their own food.
Not only can this defer food costs for you, but it will also get you outside to enjoy the beauty in our world without a constant barrage of bad news. (Can you tell I actually need that distraction the most right now! And with 10 degree weather I'm just not getting it)
Now I'm not telling you to go out and start a farm in your yard if you've never grow anything before. Start small. Buy a patio tomato and a pot of basil. If you've done that already find a spot in your yard you can grow some of your favorite herbs. (Herbs being just about the easiest thing you can grow.) Do you have a chain link fence, cover it with peas and beans.
DON'T SPEND A LOT OF MONEY. You don't need to get fancy here. As with any hobby there is the potential to get spendy pretty quickly and that would quickly negate any potential savings to you. Don't do that. If you don't feel like digging get some used containers from someone (trust me, if you know anyone who gardens, they have some plastic pots somewhere they aren't using.) Grow some lettuce. Grow Arugula. Grow something. Try something new. Even if you fail you'll have a greater sense of what the people who produce your food go through.
Learn a new skill. Except for seeds that I direct sow (peas, beans, lettuce, turnip,) I usually buy transplants rather than starting seeds inside. Tomorrow I'm starting Romanesco Broccoli and Onions. I hope to gain the experience to do more in the future. Anything you can do on the road to helping yourself is a bonus and will repay you in much more than the cost of your tomatoes.
If you really want to feel inspired (or intimadated!) head on over to The Little Homestead in The City for the story of a family of 4 who grow 6000lbs of food a year on their 1/10th of an acre city lot! Amazing!