What You Need to Make Your Walking Stick Monopod
Walking stick. If you already have one, great. If not, don't bother going to the store and getting one that's overpriced: take a nice walk in a nearby forest, maybe shoot some pictures while you at it, and look for a good stick. Make sure it is a height that is both comfortable to walk with and to take pictures from. You want one that can take your weight, so make sure you test it first by leaning on it and hitting it against a few trees. More on how to prep the walking stick later, but if it looks like it'll need a little work, you might need sandpaper (fine and coarse grits) and a knife to remove twigs and bark. Great walking sticks can also b found along the shores of a beach. If you want to laquer, varnish or otherwise finish your walking stick, feel free to collect materials to do so as well, though this article will not cover such details.
Screw. Ten cents at the local hardware store, and chances are that you'll have the right one laying around the house. You're looking for one that will fit the tripod mount on the bottom of your camera, generally ¼ inch, and about an inch long. If you can find the right size without a head, even better, as that will streamline the process somewhat.
Drill. This can be hand powered, or even just something to gouge a small screw-sized hole with, like a knife or screwdriver.
Glue. I would recommend Gorilla Glue, as that expands to fill any extra space, and it wonderfully strong.