When I am in Spain throughout the winter, I live in a log cabin with solar power. In the dead of winter there is often not enough 'juice' in the batteries to last the evening. I sometimes rely on candles and like to make my own. I do not need fancy candles or short duration candles but utility candles, long lasting with a good flame. I also like to re-cycle stuff that is normally thrown away as rubbish. I have devised a way of using the little yoghurt pots and cola cans as candle molds.
The procedure is about the same for both. I start by making a hole in the centre of the base of the pot or can. With the cans, I then cut off the top with a can opener. I thread a wick through the hole in the base and secure and seal it with a little bluetack. I then use a clothes peg to hold the wick at the top central on both types. The yoghurt pot size uses a standard no15 wick but I have tried two methods with the cola can size. First method was to plat the no15 size wick so that effectively it was 3 times thicker. I have also used a piece of oil lamp wick which was cut to length then cut into 4 lengthwise. These wicks were soaked in molten wax before fitting to cans.
After the molten wax has set in the cans and pots, they are just peeled off and thrown away. When peeling off the cans use leather gloves as the peeled metal is extremely sharp and liable to spring against your hand.
Result cheap & easy long lasting candles giving good light.