So you already grow your own vegetables and fruits, make your own pickles, jams, juices and wine. Next as many are doing you could consider growing your own eggs and or meat. I grew up on a farm and know that keeping such as a few hens is not difficult. Be warned though- most books on the subject dwell too much on diseases and problems. In practice with backyard animals, especially fowls, few troubles ever arise. True you should be aware of potential difficulties but in practice these are rarely encountered.