Having a small backyard shouldn't stop you from growing any kind of produce that you want! There are plenty of solutions for backyard gardening and a trellis and raised garden box combination is a great example. Cucumber, snap peas, green beans, tomatoes… ah, just think about that fresh organic food you can grow in a small area! Another huge advantage of this system is that it makes harvesting a breeze.
Trellis and raised garden box combo | DIY projects for everyone!
A greenhouse made from 20 oz recycled water/soda bottles! I don't drink soda, and I only rarely buy bottled water, but I'll bet I have enough friends and acquaintances who do that I would be able to build this project someday. Not yet, though. Don't start saving your bottles for me until I'm ready! :)