Recently we did an experiment using a tea light, food coloring, water, and a plate.
Put food coloring in water. Pour colored water onto plate. Put a DRY tea light in the center of the plate. Light the candle, put glass over the lit candle. See what happens.
The kids were amazed at the results! What happened was the water was sucked up by the tea light. They did it over and over again with such delight!