Climbing a tree is now as effortless as taking walks up the stairs using the CanopyStair. It is a spiral stairway that straps on to the trunk area of a tree. Every single step is a lift-up and can be shackled by the tree without using any equipment. The CanopyStair was created by Robert McIntyre and Thor ter Kulve in an effort to make any tree a treehouse. These guys put special attention into the layout so that it wouldn’t damage or harm the tree once taken out.