Take a small smoldering fire at a campsight, and then take the carton that your six-pack (or 12-pack) came in and open both ends and square it up, then place it like a chimney in the center of the smoldering coals and watch what happens.
You will recreate the pillar of fire scene from The Ten Commandments!
-PJ
*sniff* Reminds me of my husband, an avid camper and volunteer fireman. RIP.