Idea: Branch staircase and rough wood steps. The Adirondacks country house's main staircase railing is crafted from tree branches and logs. Notice the use of a variety of natural woods in the unfinished wood walls and the rough hewn wood block stairs.
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.