He converted heat energy from some candles into electricity to power LED lights and use them as an emergency product.
This device could also be used as Battery/smartphone charger, External fan (cooling effect, fire booster, etc.),
He used two cans of TUNA fish and USB notebook lights.
Can 1 used to absorb heat from the candles. Can 2 contains water.
Aluminium distance plates to get a more even heat transfer.
He used a soldering iron and screw the cables to a terminal