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.
The bandsaw has a 6-3/8” resaw capacity. I find this to be enough for my needs but after recently acquiring some larger chunks of a bradford pear tree that came down in a storm I realized it would be nice to have greater resaw capacity just for getting larger chunks into usable sizes. I don’t think that has justified an upgrade to a larger bandsaw or a riser block kit for me though.
Working on one side at a time, glue and nail the side to the back. Apply glue and drive three 1-5/8-in. nails into each shelf, attach the other side and nail those shelves into place to secure them. Clamps are helpful to hold the unit together while you’re driving nails. Center the top piece, leaving a 2-in. overhang on both sides, and glue and nail it into place. Paint or stain the unit and then drill pilot holes into the top face of each side of the unit and screw in the hooks to hold your ironing board. Mount the shelf on drywall using screw-in wall anchors.
Who doesn’t want to have one awesome and handy wooden desk organizer that not only looks beautiful but can store all your mini office desk items properly? See the picture below. I am sure you will love this one. I have already built one myself as I just could not resist having one at my office. This thing easily stores all my office desk essentials, including pen, pencils, marker, small notebooks, etc. in the most organized way. You can see it yourself.