French cleats are a simple way to hang things on walls while allowing easy repositioning. One bevelled cleat is fastened to the wall and the other is fastened to whatever you want to hang. One catches the other and gravity does the rest. French cleats are commonly cut at 45 degrees but I prefer to cut mine at around 30 degrees. This makes them easier to lift off the wall (especially way up high) without sacrificing security.
When I built the cabinet that houses my marking and mea­suring tools, I wanted to make sure each tool had its own spot and would stay fixed. I cut the drawer bottoms and used contact cement to adhere ¼" cork sheet to one side. Using an X-acto knife, I cut around each tool, then peeled the cork off the plywood with a chisel. I made the handles with hand planes, cut them to length and glued them to the fronts using a rubbed hot hide glue joint.
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.)