Eggs and pets!
I just wanted to mention that the higher production breeds (like red sex-links, australorps, rhode island reds, etc.) will have more health issues, and shorter life spans. If you want pets, I would go for Easter Eggers, Wyandottes, or Orpingtons. Bantams are really good if you don't mind the low egg production. Cochin bantams, Old English Game bantams, and D'Uccles are all nice breeds.