Start with ¾" plywood that is twice as wide as the depth of the cabinet and as long as one side and top/bottom. I crosscut the top and bottom off of one end and set it aside. Then, using a ½" dado stack in my table saw, I cut a series of ¼" deep dadoes across the sides. Make the spacing between them uniform so that the drawers are interchangeable. Finally, rip the sides and top/bottom in half to separate them and assemble the cabinet however you please. If you want to hang it on a wall, attach a French cleat to the back at the top and a batten of equal thickness at the bottom.
The table saw is always connected to my dust collector with a couple pieces of 4” flex hose and some 4” sewer and drain PVC pipe and a homemade blast gate. The port on the table saw is at the rear of the cabinet and this particular area of the shop sees the least amount of foot traffic so I have no problem just leaving the ducting on the floor. I also always have a few other cords on the floor here. I see this as the same principle as walking onto a porch. You know the steps are there so you pick up your feet. I know the pipe is there so I pick up my feet. Not a trip hazard in my opinion.
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.)