250 ways to start a fire.

Did you mean different ways? just kidding. FYI, there are other chemicals that you can use in place of glycerin, I don't remember all of them but I think sugar and anti-freeze were a couple. So if by chance you were stuck in the wilderness and happened to have a bottle of PP, you could theoretically use the antifreeze you have stored in your trunk to start a fire. Of course, that's assuming your cigarette lighter doesn't work and you have no matches or lighter.

I still have a bottle of Potassium Permaganate hidden somewhere. As a practical firestarter for emergencies, I can't really see the need since there are many better ways of doing it. But for entertainment, it sure is fun. Since there's a delayed reaction, a neat trick is to set everything up ahead of time then amaze people by appearing to start a fire just by staring at it.