More to explore:
recycled wine bottles
Repurpose Plastic Bottles into Hedgehog Garden Planters
Wine Bottle Furniture - Outdoor Designer Looks for Under $500 on HGTV
for my garden...one day...bottles upside down to line the path.
Little portable greenhouses (each one is covering a bell pepper plant). Made with clear plastic sheeting, each one only cost ~6 dollars.
Grow a Mini Garden in an Old Pallet
TubTrug Colander for rinsing vegetables right in the garden, and re-using the water as irrigation.
Grow Vegetables from Kitchen Scraps
Beautiful planter/fountain/fish tank! This would be awesome! No link on how to make, but I'm thinking plastic tub since glass might be too heavy?