To make a pipe cleaner Christmas tree, you will need the following materials: pipe cleaners in green, red, and white colors, a needle, thread, and scissors. First, cut a piece of green pipe cleaner to the desired size of the tree. Next, thread the needle with red and white thread. Make a loop with the red thread and a knot with the white thread. Wrap the loop around the pipe cleaner to create the first level of the tree. Repeat this process to create the rest of the tree.