Likewise, I keep all the tools nearby that are required to make adjustments to my machinery. In the center of my machine shop, I keep metric and imperial wrenches and hex keys, a machinist’s square, a stepped height gauge and a multi-bit screwdriver. I try to store machine-specific accessories such as blades and wrenches within a step of the machine. My table-saw blades are stored on the wall to the left of my table-saw, but I prefer how editor Rob Brown stores his blades.
The shelf in the first picture is made of red oak plywood. You can choose the wood type, color and design as you like for your project. In case if you need more help understanding this project, you can refer the source link below. It discusses various items used, steps and tips and personal experience of the author who personally built a Zigzag shelf.
You can also use Google image search to research a project. Unlike the PDF search, the image search provides a photo of what the project will look like, which is helpful in determining if you want to pursue building it. By doing an image search for how to build a step stool, you will have a ton of options that all lead to woodworking plans of various quality. (The how to part of these is important—otherwise you’ll just get pictures of step stools.)