Consider a common tea light.
The materials needed, derive from all over the world. The candle itself is often made out of paraffin, a by-product of petroleum, and palm oil, most likely from the Amazon rainforest. Wrapped in plastic packaging, the candles are shipped across the globe.
Gjuta prolongs the lifespan of candles by simplifying making them at home. Melt some stumps or make your own wax, and pour it into Gjuta. Let it cool, open up the mould and enjoy the home made candles. Over and over again.
The aluminium effectively cools the hot liquid. In addition, the material allows the product to be recycled several times without losing its qualities.