This awesome step stool converts into a chair. Here is how to build one.
This is a link to a Google 3D SketchUp drawing for a wooden deck chair. You will need the SketchUp software to download this drawing and its freely available online. A wood folding lounge chair with armrests.
Build this child size adirondack chair and footstool complete with cup holders. Free woodworking plans for this project are located at the link.
At this link you will find American Woodshop with Scott Philips as he walks you through the process of building a two seater Adirondack Chair. Visit their web site, then click on Season 17 and look for Episode 1709 to watch the video.