*** Great to fill up a large raised bed, and add the planting on top. Next season will have great soil. Lasagna Gardening Layers - no dig gardening! Just layer and plant - this creates it's own soil even where there is none.
In addition to recycling plastic bottles and jugs for watering slowly, try to recycle your waste water for the garden. Water collected in rain barrels, or water from the bath or laundry can be used in the garden. I'd probably use glass bottles.