Upside Down Planters
This tutorial over on design*sponge shows you how to make some upside down planters for cheap, using supplies from around the house. I've seen some conflicting reports (mostly negative) about hanging plants upside down, but for such an easy and low-cost project it's certainly worth an experiment.
Has anyone tried upside-down gardening? If so, how did it go?
diy project: recycled upside down planters