DIY: The Love of Blazing Oranges
Another DIY idea: take a mandarin or clementine, cut the peel at the equator and gently peel it off. One of the halves should have a wick in the middle. Cut a hole in the other half. Pour a little oil in the half with the wick, light it, place the top on.
Place it on a saucer to avoid damaging your table. (the top of a jam jar works well).
Also, as with anything involving fire, stay close and have water at the ready to extinguish it before the oil/wick burn out. It will probably NOT burn for hours.