This entire hanging garden project can be done in half a day at very little cost! 

All you need for supplies are 1/4″ copper tubing, a glass cutter, some glass wine bottles, Goo Gone for getting the labels off the glass, wire cutters, a drill, and some sand paper (and of course safety goggles and gloves).

Here’s a video showing the basic steps, though the Instructable also provides photos and text for each part of the project.