She stuffs rolled up cardboard in a tuna can. The reason? Brilliant!

You never know when the power might go out and you need a bit of light. This easy to make emergency candle uses cardboard, wax and a tuna can to create heat and light for 10 – 40 minutes.
emergency candle diy, repurposing upcycling
We made a couple of these in one go, they are pretty quick and easy, burn well for light and provide some heat!
emergency candle diy, repurposing upcycling
Cut your thin cardboard into a strip wide enough to fit in your can. Then start rolling – either add a wick to the center or push out the very center roll of the cardboard.
emergency candle diy, repurposing upcycling
Slide your rolled cardboard into the can – you can see we filled ours pretty full! you do need some space but how much you add is up to you and your cardboard!
emergency candle diy, repurposing upcycling
Carefully use a double boiler system to melt wax – we used candle scraps and a candle that was painted so you can see some of those paint scraps in the end result.
emergency candle diy, repurposing upcycling
Pour the was slowly into your cardboard, letting it sink down, adding more as needed.
emergency candle diy, repurposing upcycling
Once filled to your satisfaction let sit for a day or three to fully dry. Once dry your emergency candles are ready for use!

To see more: http://2crochethooks.com/emergency-candle/