More to explore:
Tips for Growing Great Carrots
PVC for growing strawberries!!
hypertufa planting spheres
"Grow your own Cinnamon! Cinnamon is well known for its culinary uses, yet it is hardly ever grown in ordinary home settings. Learn how to care for this surprisingly easy-to-grow tropical herb."
Varieties of lettuce you can cut, and that will grow back (like grass)
The Mad Planter, instructions to make. From Wait Til Your Father Gets Home
DIY concrete block planters - perfect for a corner grouping, or use half blocks on a staircase. From Remodelista