More to explore:
how to heat a room using only a candle!
Candle Powered Heater
Heatstick - how to radiate heat from a candle
an emergency candle heater.
This is cool. Heat a room for pennies a day! Good to know this trick in case of an emergency.
How To Heat A Small Room For Free
DIY Candle Powered Pottery Heater [Tutorial] : says this will heat up one room in power outage.
Heating Water from Candle
Candle-Powered Pottery Heater - for power outages due to snow or ice storms, or hurricanes.
Amazing heater made from quality clay pots, washers, nuts and bolt. Turns candle heat into radiant heater.Great for tents
Emergency Candles...will heat a 9x12 room from freezing for 12 hours...plus you can cook over it