I did try making some napalm back in middle school where I did a lot of tinkering by reading the Poor Man’s James Bond. (Yes, that was my favorite book then.)
Here’s how to make napalm yourself using some styrofoam and gasoline. Just don’t burn anyone or any houses when you do this.
On the side note, I did burn down half of my lawn while I made my napalm when I was about 11 years old. (long time ago…)