We are all familiar with alfalfa sprouts found commonly on salad bars or mung bean sprouts in oriental cooking. Sprouts can be used in salads, sandwiches, soups and stir fries.
Almost any kind of seed or legume can be sprouted at home and can be an easy and inexpensive way to add concentrated nutrition to your diet. 

There are many informational sites on the internet, but the one below is among the best that I have found. They can also supply you with organic seeds and supplies for growing sprouts.