Grow sweet strawberry in a vertical PVC tube is great solution for small garden or yard. Vertical planter will save you a lot of space, at the same time keep plants out of reach from garden insect pests AND enable you to switch to hydroponics.
Many are interested in DIY beehives in a jar. Have the rows of organic honey jars at the farmers market made you think about starting your own backyard beehive? A common suburban backyard can be a perfect place for beehives.