My neighbor gave me a full sheet of CDX Exterior plywood. It was too knotty and stripped for me to use it for much else, so today I converted half a sheet into this stool: I got the original design from an issue of American Woodworker. After I buy some more sandpaper and finish sanding this down, I'll probably stain it, lacquer it, and then add a cushion to the seat. It's pretty strong stool, so I figured I might as well use the other half of sheet to make another one.