Making napalm at home from household products. First, take a metal can and fill the can up about quarter of the way. Break apart some Styrofoam and put it in the gas. Mix this until the Styrofoam dissolves and becomes a gooey mix. Let the gas soak into the piece of Styrofoam that is in the can. Once the Styrofoam is saturated with gas you can pull it out of the can and light it.You do not want to get this on you once it is lit. It will stick to you and burn you very badly. Please use caution when doing this.