Unfortunately, I'm not allowed to keep chickens here, and I think my neighbors would be freaked out by a bee hive (if you knew the struggles I've gone through merely to be able to keep my compost bin...) but I can definitely make better use of my space. I decided to start growing sprouts, which are much better when you grow them fresh anyway. I also decided to try growing more of my own fruit. I ordered a few raspberry and blackberry bushes, and I'm looking into ordering a few dwarf apple trees to espalier near my raised bed vegetable garden. These are just a few of the ideas from Ruppenthal's book, and I definitely want to try more of his suggestions.
I'll have a full review of the book up later this week, but, in the meantime, what are you doing to make better use of the space you have? Do you grow food in containers? Have you tried sprouting? Or are you one of the lucky ones who's able to keep chickens for your own fresh eggs? Tell us about it!