I ordered some alfalfa seeds from eBay recently, along with some tomato and rockmelon seeds. The friendly seller gave us a bonus pack of cress seeds :) Both alfalfa and cress can be sprouted in the same way – sprinkled on damp cotton wool, and kept moist for a day or so until they sprout. After this time you put them in the fridge and after around 6 days they are ready to be used in salads, etc.
These are the cress seeds:
And these are the alfalfa ones:
Will post some update pics when they get growing.