Lets make an emergency candle in case the lights go out for a bit.
You will need a Ball jar plus an extra used lid, short half pint. a Coleman lamp wick, liquid paraffin or mineral oil, a 1/2 wood chisel, and a lamp cover.
Using the chisel knock a slit into the jar top to make a slit just big enough to pass the wick in. Make it a little tight. Too loose and the wick might fall in and oil will leak out if the jar is tipped.
Pass the wick in until only about 1/8 of an inch shows through, that's all the hard part!
When you want to extinguish the flame use a top from an old jar to cover the flame.
When it's cool place the second top lid over the lid with the wick cut into it and you seal the jar for further use!