This may not be for you, but if you have some time and space for a garden I would suggest growing your own greens and other vegetables. You can grow spinach, broccoli, cabbage and onions very very easily. I've been gardening for a couple years now and I love it. It's rewarding and there's quite a bit of money to be saved. Springtime is a great time to get started. You can buy the starts to all these at your local nursery starting in late Feb -- early March (at least here in Texas)
You can also grow wheatgrass, barleygrass and all kinds of other grassses inside -- which can be juiced. This would be very healthy. Good luck. S