Our church group did these awhile back. I have 4 sitting on the shelf. They used 1 quart paint cans, new ones, so the kit comes complete with a "snuffer lid" and my wife added the alcohol and silled the can up. She then duct taped a small paint can opener thing and a bic to the can. I fired one up and it works pretty well. The TP fits snuggly inside this can. I've never had to use it in an emergency.

The TP wicks the alcohol and the alcohol is what actually burns. Kind of like petroleum jelly on a cotton ball. The cotton ball wicks the PJ and the PJ burns. Once the PJ is exhausted the cotton ball burns up. I imagine that if you let the alcohol burn off entirely, the TP would burn up too.