Reuse an old tree to make a log pathway in your garden. Good use of "yard" trees and other wood that can't be milled; works much better in climates without termites. Good drainage under the log rounds will make the path last longer.
Pallet gardening, perfect for gardening within a small space. Always take advantage of empty vertical space--it will leave your balcony or patio looking clean, not cluttered. I frikn love stuff made of pallets!
Don't have much space to grow your favorite plants? Try building a vertical garden like this one, designed by Susie Frazier. Using salvaged wood, threaded rods and bolts, and a handful of mason jars, you can construct a simple hanging planter to add a lot