Various driftwood succulent planters from Washington coast driftwood with established hardy succulent and sedum plants.use as drift wood centerpiece, on windowsill, for woodland/beach garden : seattle craigslist
Patio Decor and Gardening / urban gardens, small space manipulation. No instructions, but good inspiration for taking a very narrow and challenging space and turning it into a tiered garden with vertical elements.
Here is an idea for a vertical garden in a classroom (plus a fish tank). This could also work in other places -- homes, places of worship, community centres, etc. Maybe even outdoors? With a mesh covering over the fish tank, the cats couldn't get in.