I cut back on watering my garden due to California's drought, and my plants have been suffering for it. In an attempt to be even more water-wise, I recently installed a make-shift water drip system.
I made a single 1/16-inch hole on the bottom of an empty Organics plastic soda bottle and buried it right-side up in the ground next to a plant. After filling the bottle with water, I replaced the cap and close it tightly. Using a funnel makes refilling these bottles a quick and easy task.
I can go days without refilling these bottles. And by delivering water directly to the roots, I am minimizing water that is lost by evaporation.