I had this idea called Crop Farming. What you would do is get a shovel, go into your guild house or house and dig out a patch of dirt. Then you could place a seed on it which you could go and buy from a shop. Then after a certain amount of time it would be fully grown and you could use it as a food. Or you could trade with NPC's and they could give things in return like Hats, Gralats etc.