I made my "painters points" out of some round discs leftover from using a hole saw and 1/4" dowel about 2" long. Obviously, the larger the disc, the more stable they will be and the 1/4" hole is already there and dead center. I sharpened the dowel with a pencil sharpener before I cut them to length. There again, you can make them as tall or short as you want to as long as they are all the same heights.
They work just fine for larger projects and I use them all the time.
Rog