I've got a few. The chalk dangling from a stick doesn't work for me. I prefer the magnetic holders. I have a metal one that doesn't clip onto my pocket tight enough so I go with the cheap plastic clip. Why? Well, I'm a diabetic and when I get sick my sugar's harder to control than usual. A lot of players won't stay home when they're contagious - they'd rather share their illnesses. So, by not sharing chalk I figure I'm cutting down on germ exposure. Of course, we're still sharing balls and a rack and the bridge, so it probably doesn't do much good, but it's the thought that counts.