Being the ultimate 'frugal' (cheap) type guy that doesn't ever like to throw anything away, I've found a way to use that little piece of wood that's left in your chuck jaws that was once the tenon on whatever it was you were turning. Just drill a 3/8" hole in the center of it, stick a 3/8" dowel in there, and turn a top out of it. I'm so cheap I even turned my own 3/8" dowels. I use a piece of dowel about 4" long (these are turned from applewood scraps and an ebony scrap) and hold it in a jacobs chuck to turn it.
top is top view, middle is bottom view, bottom is spinning tops.
BTW, Apple makes a great dowel for tops, hard and dense it makes a great point.
Curt, that is a cool way to make tops!
You are not the only one to save those tenon scraps. I save mine, and use them as waste wood to glue on small stuff, like hollowform collars, etc.