On Jun 3, 2013, J-L Sparrow wrote:
In Joshua Jay's book "Magic: The Complete Course" he explains a trick that uses "Science!"

He calls the trick "Four Elements," and it is done with a saucer, an empty glass, some water, a lemon wedge, and a book of matches. (I've found that you can use a small birthday candle in place of the lemon wedge and the matches, provided you have something to light the candle with.)

Make sure there is adult supervision, as fire is involved. (I take no responsibility for any injuries or damages incurred as a result of performing this trick.)

Basically, you pour water into a saucer, and stand lit a match/candle in the middle of the saucer. Then you overturn an empty glass so that it completely covers the match/candle. Once the flame goes out, the water in the saucer will actually get sucked up into the glass!

I won't go over the details here, but it's a cute little trick that's more science than illusion.